With clinics in Southern California, nutritionist Haylie Pomroy is highly regarded in Hollywood and in the medical community for her abilty to effect rapid, healthy weight loss. Her client list includes Reese Witherspoon, Jennifer Lopez, and Robert Downey Jr. Pomroy's new book, The Fast Metabolism Diet: Eat More Food & Lose More Weight, is sitting atop the Amazom.com bestseller rankings. She joins us in this episode of The Fitness Buff.