Actors and actresses who went to insane lengths to transform themselves.

13. Chris Pratt lost 60 pounds in six months for “Guardians of the Galaxy”rnrn Chris worked with a personal trainer and nutritionist from Men’s Fitness to get ready for his role. His daily regimen consisted of boxing, swimming, running, kickboxing, triathlons and eating around 4,000 calories a day. Oh, and he also gave up beer. “I actually lost weight by eating more food, but eating the right food, eating healthy foods, and so when I was done with the movie my body hadn’t been in starvation mode.”