How long do you guys usually fast for? I know that LeanGains promotes 16/8, but I'm curious to see whether anybody does pure water fasting for longer than that. I've noticed that 16 hours is amazingly easy for me to do, but while approaching the 20 hour mark, I feel like I should eat something. I usually eat something light, like fruit, when hunger kicks in. Then I slowly work my way up to the "heavier" foods.