3/8
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6. Before filming began, Boyle asked DiCaprio to shed 18 pounds. And he did it in just two weeks, according to his then trainer Cornel Chin.
"The specific work involved targeting the abs, upper body and lower body," Chin told Fitness Black Book in 2010. "All of these exercises involved using exclusively bodyweight exercises such as press ups, crunches, leg raises and so forth."
The trainer continued that a recent knee injury had taken a toll on the the star, explaining, "Leo wasn't in the greatest of shape when I first met him... [he] had gained some unwanted weight."