12 Most Radical Body Transformations For Comic Book Movies

8. Henry Cavill - Man Of Steel

Weight Gain: 20 pounds

Coming into Man Of Steel, Henry Cavill was not in Superman condition - or at least not Zack Snyder's idea of Superman condition - having slimmed down to 170 pounds for the awful Immortals. Naturally, something had to change, and in order to gain 20 pounds of muscle he worked with Mark Twight - the man famously responsible for turning the 300 cast into underwear models - training twice a day and eating 5000-6000 calories.

In five months ahead of production, Cavill managed to bulk to 190 pounds and cut his body fat for his shirtless scenes to a ridiculous 3%. Which is less than an apple, probably.

And if you're unsure of what he went through, Twight's gym mantra gives you a fairly good picture:

“Gym Jones is not a cozy place. There are no televisions, no machines, no comfortable spot to sit . Effort and pain may not be avoided. Physical and psychological breakdowns occur.”

And you get a sense of his workouts here...