Jan 10, 2011 12:21 PM:
destroys your kneed and is a poor substitute for squats because it only uses a portion of the mucles involved in squats
destroys your kneed and is a poor substitute for squats because it only uses a portion of the mucles involved in squats-See Less
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Jan 10, 2011 12:21 PM: destroys your kneed and is a poor substitute for squats because it only uses a portion of the mucles involved in squats