Many have wondered how he manages being an expert in changing his weight according to his movies
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He is extremely conscious about his nutrition. Christian Bale’s The Machinist diet included apples, salads, non-fat lattes. He even smoked cigarettes and chewed gum.
The role of Jack Dawson in Titanic was first offered to Bale
But, he withdrew later when people realized that having two Brits play two Americans would be unfair.