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Uploaded by DrClayFitness on May 20, 2011
http://www.DrClay.com - Ep60 of the Dr Clay Show explains why you should do your ab crunches faster for better results in terms of motor unit recruitment and ultimately appearance.
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Informative....thanks.
Goliathrex1983 9 months ago
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Informative....thanks.
Goliathrex1983 9 months ago