Christian Bale lost about 70lbs in 3 months for the Machinist





Charlie Sheen built muscles for Hot Shots! Part Deux

Russell Crowe gained 63lbs for Body of Lies





Jake Gyllenhaal gained 25lbs of muscle for Jarhead





Ben Stiller build some muscles for Tropic Thunder





George Clooney gained 30lbs of fat for Syriana





Christian Bale packed on quite a bit of muscle of Batman Begins





Linda Hamilton toned up really well for Terminator 2





Hilary Swank put on a lot of muscle of Million Dollar Baby





Mr. Stallone put on about 40 lbs of fat for Copland





Tom Hanks lost about 50lbs for his movie Cast Away





Renee Zellweger gained a lot of weight for both Bridget Jones movies





Demi Moore gained muscle for G.I.Jane doing one arm pushups





Jessica Biel gained some really defined muscles for Blade Trinity





Matt Damon lost 40lbs for Courage Under Fire





Gerard Butler gained muscle for 300





Ed Norton (yeah the skinny dude) gained muscles for America History X





Charlize Theron became ugly and gained a lot of weight for Monster





Eric Bana Ballooned up for his role in Chopper





Ryan Renolds packed on some serious muscle for the Blade movies

