Has stubborn belly bulge got you down? In as little as 12 minutes a day, this compact workout from the editors at &NFi;Prevention&NFi_; magazine will help you tone, tighten and trim your midsection through a series of "express" exercises designed specifically for busy lifestyles. A gut-busting routine led by instructor Chris Freytag includes elements of core training, Pilates, ball work and classic abdominal exercises.