Hugh Jackman has revealed a gruelling regime of training, dieting and ice cold showers help to bring out his inner rage to become Wolverine.
The 44-year-old actor is reprising his role as the frustrated X-Man in origins movie The Wolverine this summer and told Empire magazine how he gets into character as the mutant.
Hugh revealed playing Wolverine requires months of 4am starts, relentless training and a diet of endless chicken.
He told the magazine: "The one joy I'm allowed each week is after I do squats. I'm allowed a piece of toast with peanut butter."
And after the hot water went one morning while filming on location in the middle of a freezing Toronto winter, Hugh discovered that a cold shower could "trigger" his mutant mood.
He explained: "I went under the coldest water. I was so p***ed off I wanted to scream. And all of a sudden I was like, 'That's Wolverine', that's how he feels all the time."
The Les Miserables star also recalls his teenage angst to help him get into the right state of mind.
He said: "As a teenager, I was explosively angry; I think rugby saved me, because that's just organised violence. I would have got in a lot more fights. But I was someone who would go into a little bit of a blind rage and it was not pretty."
He added: "It's still there and I have to work on it and I have to be very sensitive as a father - I don't want them seeing that. Sometimes, of course, I lose it, but it's not constructive. And it really unsettles kids, I think. I do work on it. But that's something that I have in common with the character."
::The full interview appears in this month's Empire magazine, on sale now. An exclusive behind-the-scenes video of Hugh Jackman's photo shoot is available at www.empireonline.com