In praise of belts — you know what your waist size is (how many notches on your belt), better to track your bodily fat (adipose tissue) percentage. Prevents you from eating stuff that will make you fat.
Why prison inmates get fat (sweat pants with draw strings)— you have no idea how fat you’re getting.
The downside of loose fitting clothing — you don’t know how fat you’re getting. Jeans with belts are good.
Limited portion sizes (a la carte) as superior to buffets. My joy of getting individual beef ribs at fogo de chao (3 of them) instead of the all you can eat experience.