On the Ball: 4 Exercises For a Toned Back: Celebrity trainer Harley Pasternak is a big believer in the benefits of a back body workout, and his Hollywood clients have the results to prove it!

On the Ball: 4 Exercises For a Toned Back: Celebrity trainer Harley Pasternak is a big believer in the benefits of a back body workout, and his Hollywood clients have the results to prove it!

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