Ws On Stability Ball

While lying face down on a stability ball, keep your stomach on the ball and bend forward and down across the ball with your elbows out in a w position. Then lift your shoulders and chest up into an extension while breathing out at the top. Pull your shoulders and elbows back and down on you torso, pinching your shoulder blades in the W position at top.

Use a ball that's not too big so you are properly balanced with tension in your feet on a non slip surface.