This is a fantastic introduction to the power of chest expansion regarding mobility and function. I received a certification in Postural Restorative Institute (PRI) this year and it was a game changer for my body. The asymmetrical nature of our body receives air more through the left chest wall than it does on the right chest wall. This creates an imbalance of air pressure through our chest which can affect the can affect the ribcage, thus the shoulders, scapula, spine, and neck drastically. Air plays a vital role in how our body positions itself. Learn this technique, and then perform your CARs/Mobility/Strength Training after! I promise you will be addicted. https://youtu.be/JHuajpWPTvg?si=end-2tBl97CeqpsA