Ronda Rousey

Calories: 2,706

Exercise: 6 hours a day

UFC star Rousey follows The Dolce Diet, according to Cosmopolitan, which involves whole, nutrient-rich ingredients important for building muscle mass and promoting recovery. While she said she doesn't count calories, her diet often consists of a chia bowl and coffee for breakfast, scrambled eggs on bread for lunch, something like turkey chili for dinner, and Greek yogurt for dessert.