16 Stars Who Went Through Major Weight Transformations for a Role

Christian Bale made a major transformation for his role in 2004′s The Machinist.

In the movie, he played Trevor Reznik, a machinist with severe insomnia. The lack of sleep leads to severe weight loss, so Reznik becomes extremely thin.

He went from from 173 pounds to 110 pounds. To lose these 63 pounds, the actor followed a draconian diet: for almost four months he ate only one can of tuna fish and one apple per day.

This type of diet is a very low calorie diet, ensuring only around 260 calories a day. There are 194 calories in one can (6.5 ounce) of tuna in water, and one medium size apple (about 150 g) has 80 calories. The “menu” was completed with black coffee and water.

Additionally, Christian said he also exercised hard, with his regime including intensive cardio workouts and intensive resistance/weight training workouts.

Christian also went through a weight transformation for American Hustle.