"Your body is not a bank account. It's a chemistry lab." That is the mantra of JJ Virgin, one of the nation's foremost fitness and nutrition experts. She has 25 years in the health and fitness industry and is the author of the New York Times best-seller The Virgin Diet: Drop 7 Foods, Lose 7 Pounds, Just 7 Days. Virgin's discussion with former SUCCESS publisher Darren Hardy is full of strategies for helping you stay lean and healthy no matter what challenges you face.