The Mind-Blowing Michael Phelps Diet

12,000 Calories Per Day 1 of 10

Michael Phelps is an astonishingly accomplished athlete and Olympian. You likely know of his stunning records and medal counts, but do you have a clue about the things he ate to stay in ultimate Olympic shape?

During his record-breaking Olympic marathon, this monster athlete abided by a mind-blowing diet of 12,000 calories per day. "Eat, sleep and swim. That's all I can do. Get some calories into my system, and try to recover the best I can," he says.