Proper Execution: |
Position the ball on the ground so that you are able to hold onto something about 6 to 10 inches higher than the height of the ball. Lie across the ball and extend your arms behind your body to hold onto something for support. With a slight bend in your knees, raise your legs up until they about 10-12 inches higher than parallel. Pause briefly at the top and then lower your legs back down until they are 4-5 inches below parallel. Continue until you reach muscular failure. |