Brittany Viola

Brittany Viola competing in 10-meter platform

Brittany Viola competing in 10-meter platform

Olympic diver Brittany Viola is representing Team USA in the 10-meter platform competition in London this Wednesday and Thursday. Viola was a collegiate champion at the University of Miami, where she still trains.

Recognizing that her sport is both athletic and subjective, she keeps a hardcore fitness regimen that includes up to 15 workouts per week. And she works with a nutritionist to fuel her body.

But Viola hasn't always eaten right. When she was a teen, she struggled with bulimia. In order to conquer the disorder, she says, "I had to switch my thinking into seeing what was true instead of comparing with the world."

Q: Why do you keep fit? Just...