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9. Robert De Niro
Many of you don’t remember what a feat this was back then. For his role in the movie Raging Bull (1980) De Niro gained a whopping 60 pounds. For the early eighties this was somewhat strange, to see such commitment and dedication to your work. Actually, it can be said that De Niro himself started this trend of drastic body transformations. He also saved Martin Scorsese’s life with this movie. He was battling his cocaine addiction and work might have saved his life.