Chris Pratt hopes his six-pack can save the universe in ''Guardians of the Galaxy''; we look back at others -- including Matthew McConaughey, Christian Bale, and Charlize Theron -- who reshaped their bodies to play a part
Gained weight for: Magic Mike
Lost weight for: The Dallas Buyer's Club
Playing on his reputation for shirtlessness, McConaughey played Dallas, the owner of a male dance revue in Steven Soderbergh's 2012 stripper flick (pictured, left). But paparazzi shots from another Dallas entirely (the film in which McConaughey was reported to have dropped 30 pounds to play a man with AIDS) created major buzz.
Image Credit: Glen Wilson; Gary Miller/FilmMagic