Both leads can get heavier or lighter. Stay awake for days on end and it shows in the face. Working out is on the leisure list from the Extended Look.
Hair, clothes, and accessories can be changed. An experiment that made you buy groceries and stock the fridge was cut by Rockstar, because it got in the way of the game's flow.
The Extended Look made the point visible. Fast food and heavy drinking add weight, exercise builds and tones muscle, and long stretches on the run or without sleep leave you looking exhausted and haggard. The footage also shows visible imperfections such as cellulite.
Previews add that you can trim or shave hair at home, while new hairstyles need a barber or a salon. The Ultimate Edition's Sara's Unisex Salon adds facial hair for Jason, and makeup and nails for Lucia.