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Uploaded by mrdiko on Jan 27, 2008
Core and shoulder stabilization.
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Thanks for sharing that. I thought that the Prone Jacknife could only be done with a large Swiss ball, but I see it can be done with a smaller one too. Now if only I could balance on it correctly!
Mistyfumi 3 years ago
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Thanks for sharing that. I thought that the Prone Jacknife could only be done with a large Swiss ball, but I see it can be done with a smaller one too. Now if only I could balance on it correctly!
Mistyfumi 3 years ago