Christian Bale-The Machinist
Christian definitely deserves this spot in this list. He has had to change his bodyweight every now and then for the numerous movies he has acted. From having to lose 60 pounds to act The Machinist to gaining 100 pounds in six months to play Batman, Bale has definitely undergone huge transformations. After Batman, he had to drop 40 pounds for Christopher Nolan’s film. He then had to lose more for Rescue Dawn. Then he had to work even harder for The Machinist by losing 55-60 pounds which he achieved by subsisting largely on coffee and apples.