This is a more challenging advanced abs workout. You start laying stretched out supine on your back . You may want to have a bed, dresser or heavy object to hold onto to keep yourself on the ground. Lifts your legs so your feet is facing the ceiling. Then slowly move legs diagnol to your left,back to the center, then to your right diagonally. This focuses on your core and well as your mid and lower abs. Go for 10-20 but remember you must do each side to count as one rep. For example left to center to right is one rep.