http://www.sixpackfactory.com : The stability ball crunch works the upper abdominal area. The specific muscle that is being targeted is the rectus abdominus. To perform the stability ball crunch lie on a stability ball with your lower back supported. Your buttocks and head should be just off the stability ball. Place your hands behind your head. Crunch up by lifting your head and shoulders off the ball. Hold this position and slowly return. Do not let the stability ball move under your body. Breathe out when you crunch up and breathe in as you slowly lower to the start of the exercise. For more ab exercises got to: http://www.sixpackfactory.com
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