Body of Work: The Top 20 Fitness Icons

The Natural: Elle Macpherson

This Aussie knockout shows that a supermodel can be all about fitness, not famine. "My favorite high school memories are of waking at 5 a.m. and riding my bicycle to swim practice every day," Elle Macpherson says. "This joy for sports has stayed with me all my life." It's true; Macpherson, 48, surfs, paddleboards, skis, water-skis, rides horses, and hikes.