The 'Foxcatcher' actor underwent a grueling regime to portray wrestler Mark Schultz Channing admits he and co-star Mark Ruffalo resorted to extreme lengths to get into the shape they needed to be in for the movie.
READ: Mark Schultz sorry for 'Foxcatcher' rant He said: ''I dropped 15lbs(6kgs) in a day. You have a ton of water in your skin and stomach and Ruff and I figured out how much weight we could lose in the gym.
I was not feeling very well after that.''
The actor admires his character from the film because wrestling takes much more discipline than acting. He explained: ''To win an Olympic gold, you train from childhood. There's no just jumping in, saying, 'I'm really gifted.' It's a day-in, day-out obsession.''
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