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P90X3 Review – Week 4
P90X3 Workout Reviews P90X3 Week 4 Day 1 – Isometrix Started my week 4 with Isometrix. Tony said this was the toughest of yoga and he wasn’t kidding. Isometrix consists of a series of static moves — some are easy but many require balance, flexibility and strength. I find the “bound …
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