Gotta hand it to the guy, he really commits to everything he does.

A lot of people may not know that in order to play 'Wolverine' and get that insanely shredded look onscreen, Jackman actually had to severely dehydrate himself, often teetering right on the brink of potential organ damage. In order to do the shirtless scenes, he'd stop drinking anything a full 36 hours before the shoot - and that's *after* the months of grueling workouts he endured.