Channing Tatum says wrestling is one of the ''most painful'' things he's ever done.

The 34-year-old actor stars as Olympic medal-winning wrestler Mark Schultz in the film 'Foxcatcher' - which is based on real life events - and while he enjoyed learning the sport, he has no plans to carry on doing it.

He said: ''Wrestling is one of the most painful things I've ever done. I've played many sports but none like this. It's the only sport I know where you have no down time, no time to pull away and rest.

''Even in boxing, you can back away and dance around a bit, but in wrestling you're locked in combat with the other guy the whole time, and that's it.

''It was an amazing discipline to learn, but I do not need to do it ever again.''

The '21 Jump Street' star - who turned down the role in 'Foxcatcher' when he was first offered it because he felt he hadn't grown up enough to understand the psychological thriller - also admitted his love of sport has led to him becoming a very competitive person.

Quizzed on how competitive he is, he told Britain's HELLO! magazine: ''Very, very competitive. I wish I could say I've evolved into the sort of person who's a good loser, but I'm not.

''I'm the kid who is not happy at all if our team loses, and I'll go to pretty much any length to win. I get that from my dad.''