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Old 11-19-2012, 04:39 PM   #4
LeeD
Bionic Poster
 
Join Date: Dec 2008
Posts: 33,382
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Not suire about everyone else, but my arm is connected to my shoulders, which CAN move independent of my hips, by the flexing of the torso.
But yes, it's all needed for a smooth, effortless groundstroke and serve.
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