Chris Pratt
How could we not start this list then with the ever-lovable and hilarious Chris Pratt? Once hitting 300 pounds, Pratt lost 60 pounds in six months while working on film Guardians of the Galaxy. His workout regiment involves P90X, running, boxing, kickboxing, swimming, and even a triathlon. Pratt continues to stay focused to his weight loss.
Chris Pratt
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Christian Bale
If you remember, Bale underwent rapid weight loss when he transitioned from his role in The Machinest to Batman Begins. As a decorated Hollywood actor, Bale is no stranger to following rather strict weight loss programs at times.
Christian Bale