Venus Williams

Calories: 3,489

Exercise: 4.5 hours a day

According to Self, Williams starts her day with a green juice, protein smoothie, or fruit, or an egg white omelette or granola. She opts for vegan restaurants or rice, beans, and grilled shrimp for lunch, snacks on kale chips, dates, and cashews, and typically makes a salad with chicken for dinner.

Along with her intensive tennis training, Williams also dances to keep fit, according to Ladbrokes. She told People that she spends as much time in the gym as she does on the court.