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Uploaded by askpersonaltrainers on Apr 11, 2008
http://AskTheTrainer.com/best-lower-ab-workout.htmlPersonal Trainer Michael Behnken, MS, NASM-CPT-PES, CSCSLeg turns are only worth doing, if you know how to maintain a drawn in core.Keep your feet at hip level and NEVER let your back arch off the floor.San Francisco Personal Traininghttp://fitSF.com
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