Stand with your feet slightly wider than hip width apart, hands in guard position. Keep your chin down and elbows tucked in. Your right hand punch will reach to the left side, and your left hand punch will extend to the right. Rotate your hips as you punch to the side, flicking up your heel as you turn. Make sure to fully extend your arm and twist your wrist inwards with each punch, landing flat with your knuckles at shoulder level. Punch left, then right, moving continuously with this hip rotation exercise.