What decides the level and quality of our motion? Muscles, power, or flexibility? My answer is the Scapulae as engine. Our motions are initiated by scapulae, which spark kinetic chains toward spine and distal extremities. However, scapulae do not work as engine until those are peeled off from thorax. Scapulae are like wings, and so should be isolated from thorax. How do we use scapulae as engine and wings? The answer is installed in DNA, not taught by teachers. Watch the Naturalization exercise “Scapulae Crawling”, and feel how scapulae work.