" One of the most important things Feldenkrais took from Kano and judo was the understanding of reversibility: actions, to be intelligent, must be performed in such a way that, at any given moment, they can be stopped or reversed—turned in the opposite direction. The secret was never to move—or live—compulsively. (Living or performing actions compulsively is the opposite of doing them in a differentiated way. The compulsive action, unlike the differentiated one, is always done the same way, and ironically, because so much mental effort is used, it is often performed mechanically, with little awareness.) "

― Norman Doidge , The Brain's Way of Healing: Remarkable Discoveries and Recoveries from the Frontiers of Neuroplasticity