I've done 16-8 on and off for about 6 months now. I was doing early morning fasted rides and they were going well so I decided to try the full 16-8. It's pretty simple: stop eating at 8pm and don't eat till noon the next day. About half of that time is spent asleep anyway. During the eating window I eat whatever and how much I want. Simple. And I'm down 15 pounds from a year ago. (I'm 3 pounds lighter than I was the day I graduated from high school.)