Not only is Serena Williams an inspiration for staying in shape, the 17-time Grand Slam tennis champion inspires us all to love the curves we were born with. “I just started feeling comfortable with myself about six or seven years ago,” she says. “That's why I tell people that even at 25 or 26, it's OK if you're feeling uncomfortable with yourself. I was too. It's normal. I love who I am, and I encourage other people to love and embrace who they are."