Burn off Bulge with Every Step, routines for any fitness level. Created by fitness experts behind the revolutionary weight loss eating plan Flat Belly Diet, Walk Off Your Belly is an easy-to-follow 25-minute indoor workout that combines simple walking moves to boost your calorie burn with torso-toning exercises. The results: You'll drop pounds, trim your waistline, and flatten your belly. For an even firmer midsection, try the 8-Minute Belly Routine, which includes lab-tested moves that research shows are up to 80% more effective than traditional crunches.