6. Chris Hemsworth
This actor proved his worth with an intriguing body transformation for his character in “In the Heart of the Sea.” It was massive change from his appearance in Thor as a bulky movie superhero. In order to get a lean and thin figure, Chris has to follow a strict diet including vegetables, fruits, and plenty of water – a ‘starvation’ diet as he needed to lose a considerable amount of muscle mass, fast. Then he had to regain it for his next role as Thor.