12 Moves Celebrity Trainer David Kirsch Says Every Woman Should Do

How to do it: “Lie face down on top of a stability ball with your hands on the floor close to the ball and your feet flexed and spread wide touching the ground. Balance on your hands and then lift your legs and bring your heels together, scissoring with your legs. Pause for five seconds, then repeat. Do 30 repetitions. This move can also be done on a Bosu ball if you don’t have a stability ball or you have difficulty using the stability ball.”