Weekly Workout – Plank with spiderman

By now you probably know the basic plank move: get into a push-up position, then stay there. However, once you can do a basic plank for one to two minutes, you need to start adding in modifications to see gains. “Hold up an arm or a leg, or your opposite arm and leg at the same time,” suggests says Mike Durner, a certified strength and conditioning coach. When those get too easy, put one foot or one hand, then both, up on a bosu ball or a  medicine ball.