P90X2 - X2 Total Body(2013)

This ain't your granddaddy's weight-training workout. X2 Total Body combines resistance and instability to ensure that your body uses the correct muscles in the given movement. Old-school isolation movements that can lead to muscular imbalance not welcome here. In this workout, you'll earn every repetition, and form is king. Instability plus resistance equals pure muscle-building efficiency with every rep.

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