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| | 7. |  | Treat Your Own Back from Optp Price: $9.00
Customer Review:
 The book does clearly state that for some people..the extension position might be harmful. That was the case for me. While I ended up on crutches (for the first time due to severe increased pain) I do not blame the book. Just be extremely careful. When I began...I actually felt some relief WHILE in... more info
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Customer Rating: 4.5 / 5.0

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