Super simple. Intermittent fasting, no breakfast no lunch. Also, 100% carnivore diet, no weed no alcohol. The only non-meat item is either kale without dressing, or just kimchi with no sugar added.
I typically have my one massive meal a day dinner time around 6:30 PM. Ideally sleep around 9:30 PM or 10:30 PM.
Also the only beverages I consume include plain water, and black coffee.
Also, no vegetables, no fruit, no rice, no starches, no carbs, no dairy, etc.