TRX Biomechanics: Healthy Back DVD+ Workout Guide, Used, Good

Description

I
mprove alignment and posture, build strength in the back and core muscles, and take stress off the lower back with corrective exercise specialist and IDEA trainer of the year Justin Price. Price’s proven techniques focus on correcting muscular imbalances—the root of most back problems and injuries-and retraining the spine and spinal erectors to increase range of movement.
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