The first time I was in a Silver Sneakers Muscular Strength and Range of Motion class and I was handed one of these balls, I thought, Whatever. What a goofy workout tool. Then we got started. The use of this ball has really loosened up my shoulders, which were becoming fairly inflexible. Also, when you sit on a chair with one foot on the ball and then raise one foot in the air and hold? It hurts. Good core strengthening.

The first time I was in a Silver Sneakers Muscular Strength and Range of Motion class and I was handed one of these balls, I thought, Whatever. What a goofy workout tool. Then we got started. The use of this ball has really loosened up my shoulders, which were becoming fairly inflexible. Also, when you sit on a chair with one foot on the ball and then raise one foot in the air and hold? It hurts. Good core strengthening.

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