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Uploaded by askpersonaltrainers on Apr 21, 2008
http://AskTheTrainer.comPersonal Trainer Michael Behnken, MS, NASM-CPT-PES, CSCSStep ups with medicine ball twist are best used as a general warm up but can also be used as a work set to get the legs and core some work.To increase the difficulty you can either use a heavier medicine ball, or step up on a higher or more unstable surface.http://AskTheTrainer.com
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