Like Beyonce, Natalie Portman went to extremes to prepare for her role in last year’s Black Swan. The brunette beauty reportedly exercised for five hours a day and consumed only 1,200 calories in order to lose 20 pounds. "I was barely eating, I was working 16 hours a day," she said in an interview with the Daily Mail. "I was almost method acting without intending to. I do wonder now how people can do this kind of role when they have a family." Something tells us she won't be doing anything like this anymore.