12 Most Radical Body Transformations For Comic Book Movies

5. Chris Evans - Captain America

Weight Gain: 20 pounds

Though he had played a superhero before in The Fantasic Four movies, Chris Evans came into the MCU without the necessary hulking size to play Captain America. He didn't need to be Hulk-sized, per se, but if you're going to play a super-soldier you have to look both super and like a soldier.

Evans turned to Simon Waterson to bulk up, cutting body fat to around 12% and increasing his muscle mass quickly, focusing on high-weight/low-rep sets and intense cardio focused on his legs to get his heart working fast overtime.

Looking at his diet, he seems to have eaten almost constantly throughout the day, with few fats and no starchy carbs.