Celebrities With Most Amazing Weight-Loss Transformations

Chris Pratt

Chris Pratt transformed his dad bod into a six-pack all for work. The 40-year-old actor slimmed down in 2012 for his role in “Zero Dark Thirty,” and then in 2014, he lost 80 pounds for his role in “Guardians of the Galaxy” and then put on 20 pounds of muscle in 2014. The star revealed that he had to gain weight for his role in “Parks and Rec” but when he hit 300 pounds, he was “impotent, fatigued, emotionally depressed.” That’s when he decided to make a change and head to the gym.