It's easy to improve core strength, flexibility, balance, and muscle tone with this fully illustrated guide to stability-ball workouts. Sit on a wobbly inflated rubber ball and notice how muscles automatically respond to the challenge of staying upright. Add a series of muscle-toning exercises and it becomes clear why stability-ball training is so effective. The constant repositioning and balancing of the body improves core strength and balance while specific exercises tone various muscle groups. Total Core Strength on the Ball is suitable for beginning to advanced levels. It includes 70 exercises, forming several complete workout programs, including targeted back care, short and long options, and a specially adapted workout for the office. Ten anatomical illustrations are also featured.