21 Days to Fit and Lean: Three-Week Workout Plan | Women's Health Magazine Flats Stomach, Stomach Workout, Belly Workout, Killers Abs Workout, From Exercise, Cores Workout, Flats Abs, Flats Tummy, Woman Health
"Lie on your back with your right knee bent and your left leg extended. Rest your arms on the floor, palms up, at shoulder level with your hips about 2 inches off the floor (A). Raise your hips to form a straight line from your shoulders to your left foot (B). Hold for 2 counts, then return to start. Thats 1 rep. Do 10 to 15 reps on each side. To make it harder, cross your arms over your chest."