Breakthrough Belly Flattening Plan.2)One-Arm Band Pull.

Stand with feet hip-width apart. Hold an exercise band overhead with hands about 18 inches apart. Position right arm overhead, and hold left hand out to side, elbow bent about 90 degrees. Band should be taut. Keeping right arm stable, contract ab and back muscles and pull left arm down until left hand is in line with chest (shown). Hold for a moment, slowly return to start position, and repeat. Perform 15 reps. Then switch sides and repeat. To further engage core muscles, do the move balancing on one foot, then the other.