Christian Bale | 'The Machinist' (2004)

Character: Trevor Reznik, an industrial worker who suffers chronic insomnia for a year Weight change: Bale lost more than 60 pounds, reaching 121 pounds by production time. Filmmakers restricted him from dieting to his desired weight for the role: 99 pounds. Method: Bale constrained himself to a four-month diet that consisted of one cup of black, unsweetened coffee and an apple or a can of tuna each day. There's more: In six months, the actor added about 100 pounds to star in "Batman Begins."
Nicolas Gellar / Paramount Classics
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