Ironman Andy Potts, 36, struts his stuff on/in Outside (January 2013). Inside, he offers his advice on fitness, including something I really wish I could follow:

"Eat like a little kid. If you watch young children, they eat whenever they're hungry and stop when they're full. They never overeat. Eating that way helps with sustained energy."

I'm not sure I agree that kids never overeat, but you get the point.