Tom Cruise keeps his body in good shape with the help of an ice suit

'Star Trek' and 'Shaun of the Dead' actor Simon Pegg, 42, learned Tom's secret while filming the movie.

He told Daily Star: "He had this special suit. You put it around the muscles that you've been working out and it ices everything. I mean, he's 49 now - and he was working out so intensively that it was important for him to be able to actually move the next day.

"So we'd be in the make-up chairs and he'd have this little jacket thing on that would go 'pffft' every now and then to ice his muscles.

"One day I was like: 'I want to do your regime.' But when he told me exactly what it takes, I said: 'F**k that, Tom.'"

But Simon admitted he was impressed by Tom's drive and continued ambition.

'Rock Of Ages' star Russell Brand recently revealed that Tom is a joy to be around.

He told The Sun: "Tom is lovely. He's like a big charismatic hurricane smashing through your life. It's lovely to get attention from him, it's lovely to hang out with him. He's a beautiful, genuine, kind man.