Men's Fitness/Promotional 1 / 15
Men's Fitness/Promotional 1 / 15

Hugh Jackman knows where his bread is buttered.

The 42-year-old "Real Steel" star graces the October cover of Men's Fitness, where the actor admits he wouldn't be nearly as in shape if it weren't for his career as an action hero.

PHOTOS: Hollywood's buff boys

"I don't really enjoy training. People say it's addictive, but I'm like, 'not so much,'" Jackman says. "If I weren't getting paid or didn't have a character like Wolverine to maintain, I would just be a tall, lean, fit guy."

PHOTOS: Sexy Australian stars

The Aussie, who went on a 6,000 calorie-a-day diet to bulk up for the next "Wolverine" movie, says maintaining his beefcake body has only gotten harder with age.

PHOTOS: Hugh and other shirtless dads

"Over the past three or four years it's gotten a lot tougher," Jackman tells Men's Fitness. "I have to eat a stricter diet. I have to train even harder. I can't get away with what I used to."