This is a cool twist (literally) on a hanging leg raises. Grab a bar and make an L shape with your body, with your legs pointing in the air. Back should be straight and parallel to the ground. Have your legs go side to side like a windshield wiper. Your

Hanging leg raisees should be a staple exercise in your calisthenics program. A lot of calisthenics movements require strength gained in this movement. These are also great exercises for building muscle in your abdominals. Depending on you strength there are two different ways to perform this exericse. The first is

Assume the same position as a crunch. However instead of stopping once you feel the squeeze in your abs, with a sit up you keep going up until you are sitting straight up.

Lay on the ground face up with knees bent and feet on the ground. Place hands behind your head. Using your abdominal muscles pull your body up until you feel a squeeze in your abs. Then lower yourself down and repeat.