Which layer of the human energy field is most closely associated with the body's blueprint of physical health and is found closest to the physical body?

The etheric  body

The etheric body is the layer of the human energy field that is most closely associated with the body's blueprint of physical health and is found closest to the physical body.

The etheric body is the first layer of the human energy field that is found to be in immediate contact with the physical body. The ether body is the energy system for the physical body as it sustains it, joins it with higher bodies and functions as the matrix for physical metabolic activities.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.