Anyone have any luck toning their arms with this? It's harder than it looks. I have the wall chart but it's hard to tell which exercises are best for the arms. Any good sites or youtube videos that show exercises for different parts of the body?
I saw this shake gizmo in BB&B that's a similar concept. It's much smaller and a bit different method, but at least I feel the BB works if used properly. It has great reviews and was developed for physical therapy.
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