No More 1/2 Kneeling Rotary Core Training Exercises!

Nick Tumminello 2011-03-13

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http://nicktumminello.com/ - Baltimore Personal Trainer: Coach Nick Tumminello shows you why the 1/2 Kneeling Rotary medicine ball throw and all other 1/2 kneeling core rotational exercises are possibly dangerous to the health of your back.

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