This exercise is designed to be performed on a Body-Solid Tools Stability Ball. Stability Balls can be used to perform a variety of balance, core training, strength, flexibility and rehabilitation exercises that target the abdominals, hips, glutes, back and upper body.
Lie with chest on the ball and with fingers and toes grazing the floor. Roll forward so that hips are directly on the ball and hands are flat on the floor, underneath the shoulders.
With the feet together, raise the legs until they form a straight line with the torso. Hold for three seconds, and then lower back to the floor.