permaculture principles apply to the human body-mind as well as to what's outside us. Structure, use, and function are three components:
--structure (such as a misaligned skeleton or a heavy bag or a wallet) is one factor that affects functioning, but
--use, how you use your body/self, also affects it.
This is true not just of that one heavy object you lift badly or well that one time, but also of everyday movements.
The head weighs 10-12 pounds, and you lug that sucker around all day long.
The solution? observe, observe, observe.
Look for poise rather than posture, flow rather than bracing, balance rather than collapse/"relaxation".
The best book on Alexander's discoveries is now available at an affordable rate in an electronic edition! Frank Pierce Jones, _Freedom to Change_.