According to Moshe Feldenkrais:
“A person is made of three entities: the nervous system, which is the core; the body – skeleton, viscera, and muscles – which is the envelope of the core; and the environment, which is space, gravitation, and society. These three aspects, each with its material support and its activity, together give a working picture of a human being.
There is a functional correspondence between the core (the nervous system) and the outside physical world, or even the social environment. This relationship can be much closer and more vital than even between some adjacent parts of the nervous system itself. Think, for instance, of men going deliberately to face death in order to preserve an established social order. In this case, the ties of a nervous system to a social order may be stronger than those with the body itself, so that some individuals sacrifice the first two parts of themselves to preserve the third. It is to ignore reality, if one intends to make a change in the behavior of a person and disregard, even for a moment, any one of the three constituents of existence.”
Ref: (emphases in blue bold mine) (I need to check pagination) Moshe Feldenkrais ‘Mind and Body,’ pp. ? in Ed. Elizabeth Beringer (2010) Embodied Wisdom: The Collected papers of Moshe Feldenkrais. Somatic Resources: San Diego.