![Why do we still have patients and athletes exercise with a ball between their knees?!? | by David Potach | Medium Why do we still have patients and athletes exercise with a ball between their knees?!? | by David Potach | Medium](https://miro.medium.com/v2/resize:fit:745/1*xokYgtrbrEmGsyQZh4pKDw.jpeg)
Why do we still have patients and athletes exercise with a ball between their knees?!? | by David Potach | Medium
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Amazon.com: CIZEBO Small Exercise Ball for Between Knees, 6 inch Pilates Ball with Pump, Mini Yoga Core Ball Physical Therapy, Blue : Sports & Outdoors
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