A couple of years ago I got a book called Warrior Diet....Warrior Diet is based on eating one large meal per day. It's actually not too bad because you're allowed to eat or drink very small snacks during the day. The bulk of your daily calories is to be eaten during a short feeding window in the evening... Personally I need about 2700 - 3000 calories per day at the moment in order to maintain my weight and sustain my active lifestyle and I found it really difficult to stuff that many calories within a short feeding window at the end of the day.