The Dumbbell Swing exercise works your shoulders, back, abs, butt and hamstrings.
Press the dumbbell with 2 hands and hold it for a minute in front of your body. Initiate the movement by hinging your hips backwards and contract your glutes and extend your hips forward to create momentum to swing the dumbbell upward. Keeping your core tight, extend your arms fully overhead to an upright position. The momentum is in your hips contracting, not your arms pulling. Your arms act like chains pulling on to the dumbbell.