HOW: Start by lying on your back on a swissball with your feet on the ground. Have a dumbbell in one hand and press it up straight up over your chest with your knuckles facing the sky. Have a slight bend in your elbow as you lower the weight out to the side. Once you feel enough of a stretch in your pec muscle, pull it back into the starting position.
FEEL: You should feel your chest muscles working.
COMPENSATION: Don’t have your elbow straight, keep a slight bend.
