Hugh Jackman: It’s Not Easy Being Wolverine At 55

20th Century Studios / Marvel

Hugh Jackman has one complaint about renewing his acquaintance with the Wolverine role for his upcoming Deadpool and Wolverine.

“When I came back to it, it was really fun and I was thrilled. My body was a little sore at the beginning, but I was thrilled that my body was still responding. And I realized how good it is for your brain. But the hardest bit…the food,” Jackman says. He’s always had trouble bulking up.

“I have to eat a lot,” he continues. “For me, for my body type, I’m naturally skinny. To get the size on, that’s the hardest bit. That’s the bit that does my head in.”

Speaking to People with Jackman, Ryan Reynolds said he “couldn’t believe” the physicality he saw from Jackman.

“Just the sheer relentlessness that you dedicated yourself towards stunts, choreography. It was the first time I’d ever seen how invaluable a background in song and dance is when you are doing an action movie,” he said. “You hit your marks in those fight scenes with speed and confidence, the likes of which I have never seen. I don’t care if you were 25, 35, 45 or 55. It was lightning.”

“Watching you do what just looked like a clinic on stunt work was one of the most impressive things I’ve ever seen in my life,” Reynolds added.

Deadpool & Wolverine hits theaters July 26.