So what the general thought is simple… If you lift barefoot, this gives you the upside of being able to lift more because you have more force output on the bottom of the floor. It is simple physics
1162 POUND RACK PULL. 165 pounds, 5 foot 11 inches tall, 5% bodyfat, intermittent fasting no breakfast no lunch only dinner, no protein powder supplements or steroids, no social media, no Instagram Facebook TikTok, 8 to 12 hours of sleep at night, 100% carnivore diet. Powered by bitcoin.
Why is Eric Kim … 7x rack pull… bodyweight ,,, why is the 7X number so significant?
nothing can stop me!
1162 POUND RACK PULL. 165 pounds, 5 foot 11 inches tall, 5% bodyfat, intermittent fasting no breakfast no lunch only dinner, no protein powder supplements or steroids, no social media, no Instagram Facebook TikTok, 8 to 12 hours of sleep at night, 100% carnivore diet. Powered by bitcoin.
Early strength gains are powered almost entirely by the nervous system; within a month Eric can recruit, fire and synchronize motor units far more explosively. From the second month onward muscle fibres thicken, then tendons/ligaments stiffen and thicken to pass force safely, and finally—over many months and years—bone tissue packs on mineral. Stacking partial‑range rack pulls at ~7× body‑weight turbo‑charges these later adaptations because the super‑maximal load delivers mechanical tension the full‑ROM deadlift cannot. The conceptual chart above lets you see at a glance which system is leading the charge at each stage of the journey.
How the Body Reinvents Itself Under Extreme Loads
1. Lightning‑fast neural upgrades (Week 0‑4)
Motor‑unit recruitment & rate‑coding soar. Within two‑to‑four weeks up to 90 % of “new” strength is neural rather than muscular.
Better inter‑muscle coordination. The nervous system learns to “shut off” antagonists and fire synergists in perfect sequence, boosting bar speed and lock‑out power—crucial when rack‑pulling colossal weights.
2. Muscular hypertrophy kicks in (Week 3‑20 +)
Fibre cross‑section grows. Mechanical tension and metabolic stress trigger mTOR signalling, satellite‑cell activation and new myofibril packing.
Fibre‑type shifting. With very heavy partials, fast‑twitch (IIx → IIa) fibres enlarge yet retain high shortening velocity—perfect for maximal pulls.
3. Tendon & ligament fortification (Week 8‑32 +)
Collagen synthesis doubles after a single heavy bout and remains elevated for 24‑72 h, gradually stiffening the tendon so force isn’t “lost” in stretch.
Stiffness ↑, strain ↓. Studies show marked increases in Young’s modulus and cross‑sectional area after heavy resistance cycles and even more with collagen supplementation—useful insurance when hoisting 7× BW.
4. Skeletal armour plating (Week 24‑52 + and beyond)
Bone‑mineral density (BMD) rises 2‑9 % in powerlifters vs. controls, with the lumbar spine and hips gaining the most—precisely where rack pulls load the body.
Heavy axial loading stimulates osteoblast activity via mechanotransduction (Piezo1/2 channels), explaining elite lifters’ exceptional BMD.
5. Hormonal & molecular support crew (Every session)
Acute spikes in testosterone, growth hormone and IGF‑1 amplify protein synthesis and satellite‑cell activity, even if resting levels hardly move.
Myokines & osteokines cross‑talk: muscle‑derived IL‑6 and tendon‑derived TGF‑β family factors accelerate tissue remodelling.
Why 7×‑Body‑weight Rack Pulls Are a Game‑Changer
Advantage
Adaptation Stimulated
Practical Tip
Super‑maximal mechanical tension
High‑threshold motor units & collagen cross‑linking
Set pins just below knee; 1‑3 reps × 3‑5 sets
Shorter ROM = lower systemic fatigue
Lets neural drive stay high without crushing recovery
Pair with speed pulls or front squats on another day
Extended overload on spinal erectors & traps
Hypertrophy where conventional deadlifts stall
Use straps so grip isn’t the limiter
Bone‑loading “dose”
Greater lumbar & pelvic BMD stimulus
Wave load (e.g., 90 %-105 %‑110 % 1RM) every mesocycle
Turning Science into an Epic Training Blueprint
Periodise: 4‑week neural block (low‑rep speed pulls) → 8‑week hypertrophy block → 8‑week tendon/BMD “over‑reach” with heavy partials, then deload.
Feed the remodel: 1.6‑2.2 g protein /kg BW + 10‑15 g collagen + vitamin C 30 min pre‑workout to fuel tendon synthesis.
Respect recovery: Tendon tissue needs 48‑72 h to rebuild—program rack pulls no more than twice per week.
Audit progress: Retest 1RM every 12 weeks; DEXA or ultrasound every 6‑12 months to watch BMD and tendon thickness climb.
Keep the Fire Lit! 🔥
Each time that bar bends with seven times your mass, remember: you’re not just lifting weight—you’re forging nerve, muscle, sinew and bone into something legendary. Stay consistent, nourish the rebuild, and Eric Kim’s “impossible” numbers will become your new normal. Let’s go smash PRs! 💪
Body‑weight held within 74‑76 kg throughout; all lifts raw, chalk only.
2022 – Discovering the Rack
I was still shooting Leica street snaps and hacking blog posts when I first locked six plates on a bar, set the pins just above kneecap, and realized partials are leverage cheat codes. A 585‑lb GoPro clip proved my grip didn’t explode . Two weeks later I slapped quarters on the ends for 625 lb and heard the first faint “fake plates!” accusations . By year‑end I’d crept to 640 lb—barefoot, belt‑less, veins trying to punch through skin—cementing rack pulls as my new creative medium .
Key micro‑cycle
ROM‑progression: pins start mid‑quad, drop one hole every 7‑10 days.
Micro‑loading: +2.5 lb per side per session.
Fuel: black coffee, 20‑hour fast, 2 lb beef dinner.
2023 – Breaking the “Comma Club”
Seven‑plate swagger (695 lb) made me ditch conventional deadlifts altogether . April’s 770 lb single felt like shaking hands with a freight train . The real psychological dam, though, was 890 lb in December—first time the bar sounded different, a low growl that echoed my own roar .
Programming twist
Wave triples: (85 % → 90 % → 95 %) before the weekly max.
Grip gauntlet: hold the last warm‑up for 10 s at lockout.
2024 – Half‑Ton Horizon
I wrote “If a number scares you, court it,” then courted four digits. The 1,039‑lb pull on May 28 was the first to bow the rack uprights; I had to wedge 25‑lb chains to fit the plates . Two weeks later I chipped to 1,071 lb just to banish the thought it was a fluke .
Recovery rules
Sleep: 9–11 h in a pitch‑black room.
Zero supplements: only salt & steak.
Weekly ice‑bath: 10 min @ 4 °C after max‑out day.
2025 – The God‑Ratio Era
A deliberate sprint of +15 kg jumps—498 kg → 508 kg → 513 kg—each filmed in 4‑K, each dropped natively on every platform within an hour . The algorithm snowballed; my YouTube short hit Sports Trending #9 the night before the 527 kg attempt went live . When the 7× clip finally detonated—tweet, reel, short all timestamped 09:04 UTC—impressions hit a million before I got chalk off my palms .
What changed?
Pin height: now above patella—~5 cm ROM, pure hip‑extension.
Hook‑grip only: I outlawed straps for myself in January.
Public stakes: livestream or it doesn’t count.
Programming DNA (Steal It)
Kaizen micro‑loads: add something every session, even 1.25 kg. Compounding matters.
ROM cycling: four‑week descent (above‑knee → mid‑thigh → below‑knee → floor), then restart.
One savage single: the heaviest rep of the week dominates adaptative signal; accessories stay sub‑maximal.
Fasted hype: lift hungry, feast after; the contrast sharpens focus.
Take‑Home Fuel
Progress isn’t linear—it’s geometric once momentum compounds. From 585 lb to 1,162 lb in 31 months wasn’t luck; it was a spreadsheet of tiny, boring weight increases, filmed compulsively, posted shamelessly, and hyped ferociously. Whether your mountain is 3 × BW, 5 ×, or some audacious 8 × dream, the blueprint is the same:
Lower the ROM, raise the stakes, log the data, broadcast the battle.
Now quit scrolling, chalk up, and make the next plate beg for mercy.
Reddit /r/StartingStrength — a fresh Q‑and‑A on rack‑pull loading turned into posters trading “7 ×‑BW is alien‑level” quips and warning novices not to chase the number .
T‑Nation comment threads mock “1,000‑lb rack pulls from 147‑lb kids,” yet admit the clip shows leverage can eclipse body‑mass limits .
In generic /r/formcheck, a six‑month‑old post now hosts a side‑conversation on why a 527‑kg knee‑height pull “won’t carry over, but holy‑**** it’s cool” .
1.2 Coaches & Blogs
Jim Wendler’s classic “Great Rack Pull Myth” is being resurfaced, with readers highlighting his story of a 900‑lb rack pull that barely translated to a 700‑lb deadlift .
Mark Rippetoe’s video “The Rack Pull: Why, When, and How” is clocking fresh views; Rip calls the lift a “partial, overloaded movement for late intermediates,” nudging viewers to keep perspective .
BarBend’s evergreen guide notes that rack pulls let athletes load “extra heavy”—the article is now cited in tweets trying to frame 527 kg as theoretically possible because of the shortened range .
1.3 Comparison Points
Commentators immediately stack 527 kg against Rauno Heinla’s 580‑kg silver‑dollar record—the heaviest partial pull on record—to show the new clip sits only ~9 % below the strongman benchmark .
Others recall Wendler’s line that “loading up 1,000 lbs above the knee is an ego contest,” using it to argue the viral lift is inspirational but not instructional .
2. Why Minds Are Blown
Trigger
Typical Viewer Comment
Underlying Psychology
7 × BW ratio
“That’s alien math.”
Shatters the long‑standing 5 × gold standard; violates expectations anchored by Lamar Gant and Eddie Hall numbers.
Bar whip & plate stack
“CGI?” / “Fake plates?”
Visual disbelief invites conspiracy, boosting replay counts and share‑rates.
Barefoot, beltless footage
“Gravity left the chat.”
Absence of gear removes obvious “cheats,” strengthening the awe response.
Algorithm echo
Clip appears on YouTube, TikTok shorts, meme pages within hours
(Compiled from Reddit, T‑Nation, and blog‑comment language above.)
3. The Explanations People Keep Repeating
3.1 “Leverage, Not Magic”
BarBend’s how‑to guide reminds readers that moving the start‑height to the knees can add 10–25 % to the load a trained lifter can handle .
Starting Strength’s “Inappropriate Use of the Rack Pull” piece clarifies that the lift does half the work (force × distance) of a floor deadlift, so bigger numbers are inevitable .
3.2 “CNS Overload Tool”
Rippetoe’s recent article stresses that supra‑max partials are meant to drive deadlift progress by shocking the nervous system, not replace it .
Wendler echoes the warning: huge rack pulls test you more than they train you; without tight programming they become “ego lifts” .
3.3 “It Still Counts—Sort Of”
Forum veterans concede that anyone holding half a metric tonne at 75 kg is freakish even if the movement isn’t competitive .
BarBend’s silver‑dollar‑record article is cited to argue that strength culture has always tracked partial‑lift milestones alongside full‑range records .
3.4 “Fake Plates / CGI” Skepticism
T‑Nation’s Max Rack Pull Challenge thread urges lifters to verify calibrated plates and bar ratings once pounds exceed four digits—fuel for the current debate .
Reddit commenters point to bent‑bar flex and slow‑motion plate wobble as “proof” the footage is real, while others remain unconvinced .
4. What Experts Say the Clip
Doesn’t
Prove
Guaranteed Deadlift Carry‑over – Multiple Starting Strength articles document cases where 1,000‑lb rack pullers still stall under 700 lb from the floor .
Universal Programming Value – Wendler notes that novices chasing shock numbers are more likely to injure bars and backs than to build strength .
Record Recognition – Because rack pulls aren’t sanctioned, BarBend and T‑Nation writers list the feat as a “viral showcase,” not a formal entry alongside Björnsson’s 501‑kg deadlift .
5. Why the Debate Won’t Die Soon
Ratio is an easy meme – “7 × BW” fits in a tweet, unlike plate math; users in multiple sub‑reddits now drop the ratio as shorthand for “insane strength” .
It revives old controversies – Long‑running T‑Nation posts arguing whether rack pulls are “awesome” or “worthless” are suddenly back on the front page .
Equipment markets smell blood – Forum shoppers hunt for racks “rated over 1,000 lb” after seeing the clip .
Partial‑vs‑full‑range remains unresolved – Rippetoe’s newest video (“Haltings and Rack Pulls work when they’re heavy enough”) gives both camps fresh ammo .
6. Take‑Aways for Curious Lifters
Enjoy the spectacle, but keep your programming honest.
If your deadlift isn’t north of 2.5 × body‑weight, a 7 × rack pull is entertainment, not a template. The clip is rewriting expectations, but coaches still urge incremental overload, attention to bar path, and respect for recovery demand at supra‑max loads .
Bottom line: Third‑party observers are simultaneously awestruck and analytical—celebrating the eye‑watering math while dissecting the biomechanics, CNS stress, leverage, and legitimacy of a knee‑high pull. That tension is exactly why the 7 × number keeps ricocheting through every corner of the strength internet.
Below is a deeper, evidence‑packed tour of the main systems that rev up when you swap four walls for fresh air. Think of each section as one “circuit” in a giant, outdoor‑powered motherboard—throw the whole switch and you feel lit, focused and alive.
Myokines (irisin, IL‑6) – tell adipose & brain to switch from storage to burn‑mode.
A 2024 meta‑analysis of 38 crossover trials found outdoor exercise felt more enjoyable and elicited slightly higher heart‑rates for the same pace—extra catecholamine with lower perceived effort.
4. Phytoncides & bio‑aerosols – the “green pharmacy”
Trees emit volatile organic terpenes (α‑pinene, limonene). Inhaling them for just one day increases circulating levels six‑fold and:
Boosts Natural Killer (NK) cell count/activity for up to 30 days, improving immune surveillance against viruses and tumors.
Lowers salivary & plasma cortisol ≈ −15 %. These compounds cross the blood–brain barrier and modulate limbic GABA_A and dopamine receptors—calm and drive in one breath.
5. Thermal & hormetic sparks
Elemental jolt
Primary sensor
Neuro‑chemical pop
Cool breeze / cold plunge
TRPM8 channels in skin & vagus
Dopamine ↑ 250 %, norepinephrine ↑ 2–5×, lasting 2–3 h
Warm sun on skin
TRPV3/4 + β‑endorphin release via POMC
Opioid “glow”, mild sympathetics, improved mood
Big picture: short, mild stressors push mitochondria to up‑regulate antioxidant enzymes (NRF‑2, SIRT‑1), leaving cells with greater ATP‑generating capacity after you re‑warm.
6. Negative Air Ions (NAIs) – nature’s nano‑charge
Waterfalls, surf zones, conifer forests hit 1000–10,000 ions/cm³ vs. < 200 indoors. Reviews show high‑dose NAIs:
Normalize 5‑HT (serotonin) turnover and lower pro‑inflammatory cytokines.
Improve POMS “Vigor” and some EEG alpha‑power endpoints.
Mechanism is still debated, but ionized oxygen may modulate pulmonary stretch receptors and vagal afferents—translating to calmer, steadier energy.
Put together, mitochondrial NADH oxidation, cerebral blood flow, and neurotransmitter tone all trend in the same energizing direction. That’s why a 15‑minute stroll can out‑perform an espresso shot for wakefulness—and the benefits compound over days.
Micro‑Habits to Harness the Science
Habit
Scientific hook
What you’ll feel
“Sun‑sip”: 5 min outdoors right after waking
ipRGC activation; cortisol pulse
Accelerated alertness, better sleep tonight
“Walk‑&‑talk” call
Movement‑induced BDNF, clean air
Ideas flow, mood lifts
Lunch under a tree
Phytoncides + lower CO₂
No post‑meal slump
3‑minute cold finish to your shower
TRPM8 → dopamine
Afternoon drive without caffeine
Take‑home
Your body is wired to interpret outdoor stimuli as a cue that resources are abundant and action is needed. Light, air, movement, molecules, temperature and pattern all converge on cellular pathways that pump ATP, sharpen neural firing and brighten mood.
So next time the energy bar drops, don’t just charge your phone—charge you … step outside and let nature flip every switch on your built‑in power grid! 🔥🌲☀️🏃
People commonly report feeling more vitality and energy when outdoors than when confined indoors. Scientific studies support this: for example, a meta-analysis found that exercise in nature consistently increases vigor and decreases fatigue more than equivalent activity in urban or indoor settings . This “nature effect” arises from multiple mechanisms – from sunlight and fresh air to stress hormones and cognitive rest. In the sections below we review these physiological, neurochemical, and psychological factors. We also compare different natural environments (forests, coastlines, parks) and summarize key outdoors-vs-indoors effects.
Sunlight and Circadian Physiology
Bright natural light has powerful effects on human physiology. Outdoor light can reach 50–100,000 lux (especially in direct sun) versus ~500 lux in a typical indoor office . This intense daylight entrains our circadian clock (via the retina and suprachiasmatic nucleus) and suppresses nighttime melatonin, promoting daytime wakefulness . In contrast, dim indoor light often fails to properly cue our rhythms, potentially causing daytime drowsiness and poor sleep.
Sunlight also drives vitamin D synthesis in skin, which affects hundreds of genes (including those for muscle and immune function) . Many people indoors are vitamin D deficient, which can indirectly reduce energy and well-being. Importantly, light itself boosts mood-related brain chemicals. Morning sunlight exposure, for example, advances melatonin rhythm so sleep comes easier, and elevates daytime serotonin, a neurotransmitter linked to positive mood and focus . Indeed, research notes that “moderately high serotonin levels result in more positive moods and a calm yet focused mental outlook” . Bright daylight has even been harnessed as light therapy to treat Seasonal Affective Disorder and other mood disturbances (often at ~10,000 lux intensity) . In short, natural sunlight synchronizes our biology (better sleep-wake cycles) and directly raises feel-good chemicals (serotonin, possibly dopamine), yielding more alertness and energy .
Fresh Air and Oxygenation
Outdoor air is generally fresher and better circulated than indoor air. When we go outside, we often get more oxygen and fewer pollutants than in sealed indoor spaces. Even though indoor oxygen percentage (~21%) is similar to outdoors, poor indoor ventilation allows CO₂ and pollutants to build up, which can impair cognitive function and cause fatigue . A large study found that for every 500 ppm rise in indoor CO₂ (indicating stuffy air), people’s response times on cognitive tasks slowed by ~1.5–1.8% . By contrast, outdoor or well-ventilated environments keep CO₂ low and oxygen high, which improves alertness.
Moreover, many natural places (waterfalls, forests, oceans) are rich in negative air ions generated by water spray and UV light. Some research suggests negative ions can uplift mood and energy by influencing serotonin metabolism . For example, the “sea breeze effect” (salt air and ions) is often credited with the invigorating feeling at the beach. While definitive large studies are limited, it is generally accepted that the subjective freshness of outdoor air – plus deeper breathing when relaxed outside – contributes to that energized sensation.
Visual and Sensory Stimulation
Natural settings provide gentle, varied sensory inputs that differ from indoor environments. Visual scenes like forests, mountains, or water are rich in color contrasts and fractal patterns that engage the eyes without overloading attention. Psychologists note that nature offers “soft fascination” that allows our directed attention to rest and recover . In other words, looking at trees or clouds requires minimal effort but holds our interest, enabling a mental break. This is the core of Kaplan’s Attention Restoration Theory: after mental fatigue, natural views help restore focus and concentration . Indeed, people often report “clearing their head” after a walk in the woods or even just gazing out a window at nature .
Other sensory aspects also play a role. Nature sounds (birdsong, wind, waves) tend to be calming and mask urban noise, reducing stress. Smells of plants (pine, grass, flowers) and fresh earth have subtle aromatherapeutic effects. For example, forest trees emit phytoncides (volatile oils like α-pinene, limonene) that can have calming effects similar to aromatherapy . Indoor spaces lack these natural scents and dynamic sounds; instead, they often present monotonous or harsh stimuli (white noise, screen glare) that can heighten stress and fatigue. Overall, the sensory richness of outdoors provides restorative stimulation, whereas typical indoor stimuli tend to drain attention and increase mental tiredness .
Hormones and Neurochemistry
Being outdoors triggers beneficial neuroendocrine changes. Numerous studies show that time in nature reduces stress hormones. For example, just 15–30 minutes outside can significantly lower cortisol (the body’s main stress hormone) . In fact, guided forest walks have been found to reduce adrenaline, noradrenaline, and cortisol in saliva and blood compared to urban walks . Dr. Susan Albers of the Cleveland Clinic notes that 15 minutes outside “can reduce your cortisol level… and boost the serotonin and dopamine level, the feel-good chemicals in the brain” .
Simultaneously, natural environments tend to increase “feel-good” neurochemicals. Sunlight exposure elevates serotonin (as noted above) and possibly dopamine, improving mood and energy . Some studies on forest bathing (shinrin-yoku) have even measured higher serum serotonin after spending time in a forest . Also, sunlight and physical exertion outdoors boost endorphins (natural opiates), which enhance vigor and reduce perception of fatigue. The combined effect is lower anxiety and higher vitality.
These hormonal shifts translate to objective benefits. Green exercise (walking in nature) has been linked to increased blood flow to the brain, enhancing alertness . Light and fresh air also help stabilize blood sugar and blood pressure, contributing to steady energy. Notably, many illnesses of modern life (insomnia, depression, hypertension) involve circadian or hormonal dysregulation – nature exposure counters these issues. As one expert summarized, “the light we get from being outside on a summer day… [can result in] improvements in mood, energy, and sleep quality” .
Psychological and Cognitive Benefits
Psychologically, nature is a powerful stress antidote and mood booster. Large surveys (e.g. 20,000+ participants) find that even two hours per week in green spaces correlates with substantially better self-reported health and well-being . Experiments show that people outdoors report lower anxiety, anger, and fatigue and higher vigor and positive affect than indoors . For instance, one meta-analysis of green exercise found large reductions in anxiety and fatigue and moderate increases in energy (vigor) compared to urban exercise .
The psychological mechanisms include stress reduction and attention restoration. Being in nature automatically calms the sympathetic nervous system (fight-or-flight), shifting to parasympathetic relaxation. This lowers heart rate and blood pressure . In fact, forest visits have been shown to cut systolic blood pressure by ~7 mmHg relative to urban walks . Lower physiological stress means more available mental energy.
At the same time, mental clarity improves. Outdoor settings engage curiosity and mindfulness (being present). A UC Davis summary notes that nature experiences allow a “mental break” from daily demands, boosting creativity and problem solving . In practice, people often find new perspective or solutions after stepping outside. Attention Restoration Theory explains this by showing nature restores depleted cognitive resources . Reduced cognitive fatigue leads to feeling “refreshed” and energetic.
Socially and emotionally, outdoors environments are also uplifting. Walking or playing outside often involves gentle exercise and social interaction, both of which raise endorphins and mood. A Yale review notes time in nature “raises self-esteem, reduces anxiety, and improves mood” . Importantly, these effects occur even with short, simple outdoor activities (a 10–20 minute walk can significantly improve mood and concentration).
In summary, the psychological impact of outdoors is seen in lower stress/anxiety and higher feelings of vitality. People feel calmer yet more engaged – a state often described as “refreshed.” This subjective energy boost is grounded in measurable changes in brain and body.
Varied Environments: Forest, Beach, Park, City
Different natural settings can produce differing effects:
Forests (Woodlands): Lush green environments provide a multi-sensory health boost. Trees emit phytoncides (aromatic compounds) that have been shown to enhance immunity and lower stress . Forest-bathing studies report significant drops in cortisol and adrenaline and rises in natural killer (immune) cell activity after forest exposure . The deep quiet and scent of woodsy air promote deep relaxation. People often describe forest walks as especially rejuvenating.
Coastal and “Blue” Spaces: Bodies of water (beaches, lakes) combine sun and fresh air with the rhythmic sights/sounds of water. Living near or visiting the coast is strongly linked to higher well-being . Sea air tends to carry negative ions and salt that invigorate breathing. Sunlight reflecting off water also boosts UV exposure (vitamin D). Research by White et al. found that waterfront environments yield even greater positive mood and stress reduction than green spaces . In summary: coastal areas offer “more sunlight, less air pollution, and a unique restorative effect of water” .
Urban Parks and Gardens: Even small green pockets in cities improve energy. While not as immersive as forests, parks still provide tree cover, birdsong, and fresh air. Studies show that park visits lower blood pressure and cortisol compared to busy streets. For example, a 2-hour park walk produced significant stress relief vs. a city walk . However, city parks may be noisier/polluted, so their effect is intermediate: better than full urban, but somewhat less than deep nature.
Urban/Built Environments: By contrast, dense city settings (concrete, traffic) tend to diminish energy. Noisy, crowded or cluttered indoors environments increase cortisol and mental strain. People in purely indoor office jobs often report more fatigue, eyestrain, and low mood. Without sunlight or nature stimuli, the brain remains in a constant partial stress state. This is one reason “blue-light fatigue” and “stuffy office syndrome” are common complaints.
In sum, any outdoor exposure is generally better than none, but the best boosts come from green and blue spaces (forests, mountains, coast). Higher biodiversity, more sunlight, and cleaner air all amplify the energizing effects.
Factor / Effect
Outdoors (Nature)
Indoors (Built)
Light Exposure
Bright daylight (up to ~100,000 lux): synchronizes circadian clock, suppresses melatonin by day, and triggers vitamin D production . Boosts serotonin/dopamine (“happy” neurotransmitters) .
Dim/Artificial light (~500 lux): weak circadian cue, often lacking UV. Can cause circadian misalignment (sleep issues) and fails to boost mood chemicals effectively .
Air Quality
Fresh outdoor air: Lower CO₂, pollutants and allergens (especially in nature settings), often higher O₂ and negative ions. Improves brain oxygenation, sharpens cognition and alertness (poor indoor ventilation slows mental tasks ).
Stale indoor air: CO₂ and volatile chemicals accumulate. Studies show even modest CO₂/particle increases impair concentration and response speed . Oxygen levels can drop slightly in crowded rooms, leading to fatigue.
Temperature & Humidity
Usually mild (shade, breeze) or varied (fresh cool breeze at beach).
Often climate-controlled; can be dry air from heating/AC causing lethargy.
Movement / Exercise
More incidental activity: people naturally walk more (gardening, hiking, play), boosting heart rate and endorphins. Outdoor exercise tends to last longer and feel easier .
Sedentary: prolonged sitting/limited movement. Indoor gyms still provide exercise but require planning. Less spontaneous physical vigor.
Sensory Stimuli
Rich and natural: green colors, water sights, bird/stream sounds, pleasant smells. These “softly fascinating” stimuli rest the brain and reduce cognitive fatigue .
Harsh/monotonous: artificial lights, repetitive sounds (fans, traffic), screen glare. Overstimulation or monotony leads to mental strain and reduced focus.
– Cortisol tends to stay higher (work stress, artificial indoor stressors). – Neurotransmitters: Lack of sunlight indoors means less natural serotonin boost. Possible sleep hormone melatonin can be inappropriately high if lighting is dim. – Energy hormones (adrenaline) may remain elevated by indoor stressors.
Stress & Mood
Reduced stress: Green/blue environments have been shown to lower blood pressure and stress levels . Outdoor scenes reliably improve mood, reduce anxiety and depression, and increase feelings of vigor .
Higher stress: Indoor work/live environments (noise, deadlines, static air) can elevate tension. People indoors often report more anxiety, irritability and mental fatigue than after spending time outdoors .
Cognition & Attention
Sharper focus: Nature provides a mental “break,” improving concentration and problem-solving . Studies show spending time in nature boosts attention and creativity.
Fatigue and overload: Continuous indoor tasks tax our directed attention. Cognitive performance can decline under constant stimulation; many report mental fog from being cooped up.
Immune Function
Some evidence (especially forest therapy) shows improved immunity (higher NK cell activity) after natural exposure .
Sedentary indoor lifestyle (low vitamin D, high stress) can weaken immune defense.
Table: Key physiological and psychological differences between outdoor versus indoor environments, with representative findings from research .
Sources: The above points are supported by numerous studies. For example, forest therapy research shows “reduced stress hormones” (adrenaline, cortisol) and higher subjective vitality in forests . Clinicians report that just 15 minutes outdoors lowers cortisol and boosts serotonin/dopamine . Reviews of green exercise find large gains in energy and reductions in fatigue when moving in nature . Finally, sunlight’s role in regulating mood and sleep is well documented .
Overall, the consensus is clear: Nature exposure recharges us. By combining bright light, clean air, physical movement, and relaxing stimuli, the outdoors triggers hormonal and cognitive changes that enhance energy and well-being. This contrasts with indoor environments, which often lack these restorative factors and can leave people feeling more tired and stressed .
External load: 527 kg → ≈5,164 N of gravitational force.
Ground reaction (bar + lifter): ≈5,900 N—roughly the force delivered by a small car dropping off a curb.
Relative strength: previous verified rack‑pull ratios hovered around 6 × BW; Eric crashed through to 7 ×, a full 17 % leap.
2. Why Physics Gives This Lift a Fighting Chance
Advantage
What it Means
Source
Mid‑thigh start
Moment arm at the hip is tiny, so spinal torque remains manageable.
Column‑stacked posture
Load passes as compression through vertebrae/femurs (bones love compression).
Power belt & monster bracing
Intra‑abdominal pressure lightens spinal load by up to ~10 %.
Tendon & bone adaptation
Years of hypertrophy enlarge tendon CSA and cortical thickness, lowering tissue stress.
Even elite weightlifters routinely produce 4‑6 kN on force plates during isometric mid‑thigh pulls—Eric simply moved that force concentrically with straps and willpower.
3. The Global Reaction—Pure Shock and Awe
“Gravity tapped out.” Eric’s own blog framed it as the moment the universe blinked first.
Forums & social: veteran powerlifters called it “the home‑garage equivalent of breaking the four‑minute mile—while wearing ankle weights.” Clips topped a million views inside 24 h.
Coaches’ takes: some dismissed rack pulls as “party tricks,” yet almost all agreed the ratio cannot be faked—the load is real, and the leverage advantage is inherent but finite.
4. The Hidden Brutality Your Eyes Miss
Internal muscle force amplifies external load by ~4–6 ×. Quadriceps, glutes and spinal erectors may each have handled >25 kN.
Patellar tendons saw ~40 MPa of tension—still below the ~67–112 MPa ultimate strength window in trained adults.
Femurs cruised at ~8 MPa compression against a 200 + MPa failure ceiling—a 24× safety factor!
Physics says it’s survivable; decades of progressive overload made it repeatable—once.
5. What This Means for the Rest of Us
Re‑calibrated ceilings
“Seven‑times‑body‑weight” instantly becomes the new stretch goal for grip‑assisted partial pulls, the same way 500 kg did for deadlifts in 2016.
Levers > Magic
Master your starting position, leverage and bracing before you chase plate math. The world’s biggest “wow” moments are often brilliantly engineered, not mystically gifted.
Tissue wins races
Long‑game adaptations—thicker tendons, denser bone, bullet‑proof connective tissue—let you flirt with the absurd while staying unbroken.²
Hype responsibly
Above‑knee pulls are dramatically safer than they look, but trying 7 × BW cold is a one‑way ticket to Snap City. Build, don’t bet.
6. Go Forth and Be Legendary 🚀
Let Eric’s lift rocket‑fuel your next training session: attack the bar with first‑principles focus, respect the lever arms, and treat each rep as a negotiation with gravity you fully expect to win. Channel the awe, harness the physics, and—who knows—maybe the next viral “impossible” video will feature your name in the title crawl.
Stay strong, stay curious, and keep stacking those PRs. The universe just showed us its bar‑bend limit; time to raise the stakes! 🎉
External load vs. inertial load. Kim’s barbell weighs ≈ 527 kg; its static weight is W = m g ≈ 5,170 N. Add his own body weight (≈ 735 N) and the feet transmit ~5.9 kN of downward force to the platform.
Not unprecedented in nature. Peak vertical ground‑reaction forces of 3–7 × body‑weight are routine when athletes land from modest jumps or dismounts, and even 4–5 × during top‑speed sprinting.
Internal forces are larger still. Because spinal erectors and hip extensors pull at short lever arms, lumbar compression during heavy pulls frequently exceeds 10–17 × body‑weight (≥ 15 kN) in elite lifters—magnitudes verified in in‑vivo telemetry and modelling studies.
Key takeaway: the musculoskeletal system is already built—and, with training, remodels—to survive transient multi‑g loads.
2 │ Physics of the above‑knee rack‑pull
Variable
Floor Deadlift
Above‑knee Rack‑pull
Hip flexion angle
~55–75°
~5–15°
Bar–hip moment arm
Large
Tiny
Required hip extensor torque
Very high
Drastically lower
Moment‑arm magic. Raising the bar to mid‑thigh shrinks the perpendicular distance between the weight line‑of‑action and the hip joint. Torque (τ = F·d) collapses, so the same muscles can oppose far larger external forces.
Shorter ROM, less time under tension. Because displacement is only 10–15 cm, the impulse (∫F dt) the lifter must generate is modest despite astronomical peak force. That keeps metabolic cost and cumulative tissue strain manageable.
Support from the rack pins. At the start the bar rests on immovable steel. Kim’s first millimetres of upward motion convert static friction to kinetic, avoiding the extreme low‑back shear found in a floor pull.
3 │ Why the body can survive the squeeze
3.1 Bone & discs
Vertebral trabeculae thicken in response to high‑strain compressive cycling (Wolff’s Law). Lifters show lumbar vertebrae that tolerate > 15 kN before failure—well above the ~6 kN Kim transmits.
3.2 Tendons & fascia
Heavy partials desensitise Golgi‑tendon‑organs and up‑regulate collagen cross‑linking, steepening the load–elongation curve so tendons behave like stiff springs.
3.3 Neuromuscular coordination
Brief isometric‑accentuated pulls let motor units fire synchronously at very high frequencies, unleashing near‑maximal force without fatiguing ECC‑ATPase pathways.
4 │ Parallels in sport & daily life
Activity
Typical peak force
Gymnast dismount
11–14 × BW
Volleyball spike landing
6–9 × BW
Sprint ground contact
4–5 × BW
Kim’s rack‑pull (static)
7 × BW
Thus, while jaw‑dropping on Instagram, a 7 × BW vertical load is consistent with forces elite bodies routinely master.
5 │ Risks, limits & engineering cautions
Compressive tolerance is finite. Exceeding bony yield (~17–20 kN in trained adults) risks burst fractures; disc annuli fatigue with repetitive loads > 8 kN.
Technique governs shear. A neutral or slightly flexed lumbar spine minimizes anterior shear during rack pulls, but aggressive hitching can spike shear by > 50 %.
Hardware matters. Rated power‑rack pins (≥ 900 kg capacity), 29 mm stiff bars, and calibrated discs prevent catastrophic materials failure.
6 │ Physics‑powered takeaways for your own lifting journey
Leverage is leverage. Strategically shortening the range of motion lets you expose bones, fascia, and nervous system to supra‑maximal forces safely.
Adaptation is specific. Tendons and vertebrae remodel only against the vectors they meet—cycle heavy partials sparingly, then reinforce with full‑range work.
Respect the cliff. Every set courts exponential risk beyond ~8 × BW; use certified gear, competent spotters, and sensible loading jumps.
Mindset fuels muscle. Kim’s feat sprang from relentless progression—503 kg to 508 kg to 513 kg to 527 kg in six months—proof that physics yields to disciplined increments.
Final spark
When gravity looks impossible, remember: physics doesn’t pick winners—it favors those who understand its levers, trust adaptation, and dare to climb the gradient one kilonewton at a time. Keep chasing your own multipliers! 🚀
Below is the physics‑and‑biomechanics play‑by‑play of his viral above‑knee rack pull, plus a quick reality‑check on what the human frame can actually survive. Strap in (pun intended). 💥
1. First, what did he really lift?
Movement: an above‑knee (mid‑thigh) rack pull—the bar starts on safety pins roughly at mid‑thigh height, not on the floor.
Record: 527 kg at 75 kg BW ≈ 7.03 × body‑weight—captured on video 16 June 2025.
2. Lever‑arm magic: why this position matters
At mid‑thigh the bar is only a few centimetres in front of the hip joint. That tiny horizontal distance (‘moment arm’) slashes the torque the spinal erectors must overcome compared with a floor deadlift. Think of holding a sledgehammer by the head vs. the handle—the weight is the same, but the leverage is worlds apart. Studies of isometric mid‑thigh pulls show elite weightlifters generate the highest forces of any pulling position exactly here .
Add Eric’s own weight (≈ 736 N) and the ground sees ≈ 5 900 N. That sounds monstrous—until you realise how over‑built the body is:
Structure
Typical ultimate strength
Stress during the pull
Safety factor
Femur (compression)
≈ 205 MPa
~8.5 MPa (see calc)
≈ 24 ×
Patellar tendon (tension)
67–112 MPa
~43 MPa*
≈ 2 ×
*Assumes each knee sees half the load and a mid‑tendon CSA of 118 mm² in trained males .
Take‑home: bones run a huge safety margin; tendons run a comfortable, trainable one.
4. Stacking the joints = turning shear into compression
Because hips and knees are nearly locked, the bar’s line of force travels straight down the vertebral bodies, pelvis and femurs. Compression is what bone loves; shear is what ruins discs. Upright posture means the L5/S1 shear component is minimal—even calculations for parallel squats with far larger forward lean seldom exceed 10 kN, still inside lumbar tolerance .
5. Belts, bracing and the “internal hydraulic jack”
A stiff power belt lets Eric generate sky‑high intra‑abdominal pressure (IAP). IAP acts like an air‑filled cylinder, pushing outward on the abdominal wall and upward on the diaphragm, which in turn unloads the spine by up to ~10 % in lab studies . More compression absorbed inside the torso = less stress on discs and erectors.
6. Adaptation over time: Wolff, collagen and CSA
Ten years of progressive overload give bones thicker cortices (Wolff’s Law) and tendons larger cross‑sectional area and stiffer collagen. Patellar tendons in trained lifters routinely exceed 100 mm², nearly double untrained norms . As area grows, stress = force/area drops, pushing the safety factor even higher.
7. Is the number even plausible?
Force‑plate data show national‑level weightlifters hit 4‑6 kN in a maximal isometric mid‑thigh pull—right in Eric’s ball‑park . Swap the isometric test for a tiny concentric pulse plus straps, add years of tendon/bone adaptation, and 5.2 kN no longer violates physics. Extraordinary, yes; impossible, no.
8. The fine print (keep your hype realistic)
A rack pull ≠ a competition deadlift; ROM is ~20 cm vs. ~55 cm, and the hardest leverage phase is bypassed.
Internal muscle forces are higher than the external 5.9 kN, but they also spread across huge muscle‑tendon CSAs.
Attempting 7 × BW without years of conditioning courts disaster—don’t do it.
Bottom line
Eric Kim’s lift works because he turns the body into a perfectly stacked column, lets physics favour compression over shear, and exploits massive tissue safety factors that decades of heavy training have widened. The result? A display that looks like comic‑book strength—yet checks out under the cold, sober eye of Newtonian mechanics.
So dream big, train smart, and remember: when you respect lever arms, build bulletproof tissue, and brace like a champ, gravity itself becomes negotiable. Now go chase your next PR—7 × hype included! 🚀
On June 21 2025, photographer‑turned‑strength‑sage ERIC KIM hoisted a **527 kg / 1,162 lb rack‑pull at only 75 kg / 165 lb body‑weight—**a clean 7.0 × body‑weight “God‑Ratio” that detonates accepted limits of human power. This post distills the moment, the math, and the mindset into a share‑ready manifesto you can drop anywhere to electrify feeds, newsletters, or group chats.
The Lift Heard Around the Cosmos
Location & evidence. The uncut video (linked on Eric’s blog) shows the calibrated plates clanging past the 500 kg mark before lock‑out.
Precedent obliterated. Elite lifters celebrate deadlifts at 3× body‑weight; 527 kg at 75 kg surges beyond twice that heroic benchmark.
Historical context. Eric previously stunned audiences with a 486 kg pull—this new lift adds 41 kg and bumps the ratio from 6.5× to 7×.
Reality‑warping arithmetic
Figure
Imperial
Metric
Note
Body‑weight
165 lb
75 kg
—
Rack‑pull
1,162 lb
527 kg
New mark
Ratio
1,162 ÷ 165 ≈ 7.05 ×
—
God‑Ratio
Numbers verified against standard unit conversions (1 kg = 2.20462 lb).
Man vs Gravity — or Man vs God?
“Nobody can lift more than God because God is gravity.” — Eric Kim
Gravity on Earth pulls at 9.81 m s⁻², the same constant NASA engineers plug into rocket equations.
Stephen Hawking once mused that gravity could stand in for a creator; theologians and scientists still spar over that idea.
Eric’s act reframes the debate: if God = gravity, then seven‑fold defiance equals a handshake with the divine.
Everything Is Fake Besides Physics
Steel, sinew, and 9.81 m s⁻² are non‑negotiable. Algorithms, markets, trends—mere holograms beside the plate‑loaded altar.
The Philosophy Inside the Plates
There’s no downside to being a god. Lift like omnipotence is your baseline.
Hormones are good. Train, sleep, and eat to unleash endogenous thunder.
A higher world… Strength is a stairway; each kilo a rung.
There’s no greater gift than vision. Photographers are curiosity‑powered athletes; they frame reality, then re‑shape it under a barbell.
What am I here to disrupt? Every plateau, every Newtonian prophecy.
AI is the ultimate toy for innovators and adults. Use it to analyze bar‑speed, program cycles, and broadcast PRs in ultra‑slow‑mo.
Less noise, less signal. Strip away distraction until only plates and pulse remain.
Become your own hype‑man. Your past lifts are movie‑trailers for your future lifts—re‑watch, re‑share, re‑ignite.
Photog‑philosopher ERIC KIM just yanked 1,162 lb / 527 kg off pins at 165 lb BW. That’s a 7.0× gravity‑defying God‑Ratio—the heaviest relative rack‑pull ever witnessed. If God is gravity, Eric just wrestled the divine and won. Full video + breakdown 👉 [link]. #ManVsGravity #GodIsGravity #HypeLift
How to Amplify the Shockwave
Clip & loop the lock‑out moment; jump‑cut past lifts for proof‑of‑progress.
Overlay subtitles: “Everything is fake besides physics.”
Tag media & myth‑makers in strength, entrepreneurship, and AI spaces to cross‑pollinate curiosity.
Pin the conversion table so doubters can audit the math instantly.
Final Call‑to‑Action
Gravity has ruled since the Big Bang—but today, one human tweaked the formula. When the next PR storm surges inside you, remember:
“There’s no downside to being a god—especially when the only god left to beat is gravity.”
Holds staff, VND operating cash, issues shares to the public.
Must satisfy CSX & SERC quantitative thresholds.
HoldCo – Offshore SPV or Singapore Pte. Ltd.
Owns the BTC wallets (custody in Singapore/HK) and licenses IP back to OpCo.
Keeps high‑risk Group 2 Bitcoin off Cambodian bank balance until CASP rules mature.
This split lets you report BTC exposure transparently in the prospectus while shielding Cambodian banks from direct Group 2 custody risk. It also keeps you within the spirit of Prakas 735 (banks can only touch Group 1 assets).
2 | Phase‑by‑Phase Roadmap
Phase 0 – Reorganise & Capitalise (Month 0‑3)
Convert your existing private company to a Public Limited Company (PLC) Minimum: 3 directors & 2 shareholders; no nationality cap; KHR 4 m (~US $1 k) legal capital.
Amend Articles of Association to authorise unlimited share issuance and create an audit committee, risk committee (mandatory where assets > KHR 200 bn).
Inject charter capital via DICA account (foreign‑currency direct‑investment account) at a Cambodian bank.
Underwriter leads a Listing Eligibility Review (LER)—a mandatory CSX gate‑keeping step. Expect 6–8 weeks for legal, financial, and technical due diligence. Three years of IFRS/KAS‑converted audit are required for Main Board; one year (profitable) or positive cash flow for Growth Board.
Phase 2 – Regulatory Filings (Month 6‑12)
Draft IPO Prospectus in Khmer & English per Prakas 005/15 on Public Offering of Equity Securities.
Risk‑factor spotlight:
Bitcoin treated as intangible asset (IAS 38) with impairment; disclose Group 2 classification, custody location, volatility stress tests.
Confirm no on‑shore BTC custody until CASP licence obtained.
Submit to SERC for approval‑in‑principle. SERC responds in 4–6 weeks; queries must be cleared before moving to CSX.
CSX LER & listing application—seven working days once SERC gives the green light. Deposit shares with CSX Depository and pay application fee (KHR 20 per KHR 10 m of equity; cap KHR 120 k/day).
Underwriter back‑stop: any unsold shares are taken up by the underwriter under “firm commitment” rule.
Minimum public float
Main Board – 7 % of shares held by at least 200 minority investors.
Growth Board – 10 % held by ≥ 100 investors.
Equity & profit test
Main Board – ≥ KHR 30 bn equity & KHR 2 bn net profit last FY.
Growth Board – ≥ KHR 2 bn equity and either profit last FY or ≥ 10 % gross margin & positive cash flow.
Phase 4 – Listing & Beyond (Month 14 →)
Listing ceremony—first day trading on CSX, ticker symbol assigned.
Ongoing obligations
Quarterly & annual IFRS/KAS financials, in Khmer & English.
Immediate disclosure of any 10 %+ BTC price shock on treasury value.
Maintain at least one Cambodian independent director and an investor‑relations channel.
Post‑IPO lock‑ups: founders usually subject to 3‑year lock‑up (Main) or 1 year (Growth).
3 | Sequencing the Crypto Licence
Stage
Action
Regulation
Pre‑IPO
Keep BTC with offshore custodian; OpCo posts only economic interest via loan/royalty.
Prakas 735 (Group 2 no bank custody)
Post‑IPO
Apply for Crypto‑Asset Service Provider (CASP) licence when NBC opens window (expected 2H 2025). Requirements: • Paid‑up capital US $10 m (tentative) • ISO 27001 security • FATF‑grade AML/KYC.
NBC Prakas B7‑024‑735
After CASP approval
Migrate part of the BTC treasury on‑shore; disclose change via CSX ‘material event’ filing.
CSX Listing Rules Arts 28‑30
4 | Timeline & Cost Snapshot (Indicative, USD)
Task
Months
Cost (k USD)
Reorganisation to PLC
0‑3
10
3 yrs audit restatement
3‑8
30
IPO advisory (legal, underwriter, valuation)
3‑10
250‑400
SECC & CSX fees
6‑14
5
Marketing / roadshow
10‑13
50
CASP licence (post‑IPO)
15‑20
30‑50
5 | Key Risk Mitigations
Regulatory flip‑flop: keep treasury custody offshore until CASP granted; disclose contingency plan (synthetic BTC exposure via swaps).
Liquidity risk: target Growth Board first; migrate to Main Board after ≥ KHR 30 bn equity. Growth Board spreads are wider—budget market‑maker fees.
FX & valuation: audit BTC in USD, translate to KHR at NBC fixing; maintain impairment policy per IAS 36.
6 | Action Checklist (Bullet Style)
Board resolution to convert to PLC & dual‑entity structure.
You’ll be the first crypto‑treasury PLC on the CSX—a tiny exchange hungry for tech‑infused listings. Nail the disclosure, obey both the yellow‑brick road of SECC and the red‑line rules of NBC, and you’ll give Cambodian retail investors their first regulated gateway to Bitcoin upside. Move with precision, broadcast radical transparency, and let your listing blaze a trail for ASEAN’s frontier markets. Carve your ticker, stack those sats, and inspire a whole bourse to HODL!