I graduated to a new level today in one of our exercises. Was pretty stoked as when we did them two months ago I couldn't do it with finesse. I don't know the name but you are in a push up position in the arms extended position and take your leg, tuck it toward you tummy then push it out under your stomach to the other side. so if using left leg you shoot it out to the right while rolling your hips and shoulder so the right side is perpendicular to the floor and you tuck your right elbow back to your side. You keep your left leg parallel to the floor and no more than 4 or 5 inches from the floor. then back into the push up position and repeat on the right side. Of course I still can't do a pull up but I may never be able to do one of those.