You see them on the big screen, on billboards, and on magazine covers. Hollywood's leading men (well, most of them) and top athletes have one thing in common: They have their fitness in line.

Washboard abs are practically a requirement to snag major roles, not to mention the public's attention. You may not care to look at them, but it wouldn't be so bad to look like them. How do male celebrities manage to stay in such great shape? Their diet go-tos might surprise you. But be aware: no wacky shakes or quirky supplements will be found here.