If you've ever wondered who's behind the infamously and enviably sculpted bodies of Candice Swanepoel or Heidi Klum, you're not alone. Fitness gurus like David Kirsch and Tracy Anderson are known for creating customized workout programs for the models and celebrities gracing the covers of Vogue or Sports Illusrated. Click through to get the scoop on 7 celebrity trainers and then hit the gym with them as your fitness inspiration!! More>>