Learn how to perform multiple exercises using the NRG Ball. Vol. I includes 16 squat, 9 lunge, and 10 bend patterns. Vol. II includes 8 push, 11 twist, 11 pull, and 16 floor exercises. Paul Chek, Howard Panes. 2000. Vol. I: 50 min. Vol. II: 60 min. 1 lb. ea.
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