was born out of a search for answers, both esoteric and environmental.

The quick definition given by Wikipedia of the subtle body is:

subtle body is one of a series of psycho-spiritual constituents of living beings, according to various esoteric, occult, and mystical teachings. According to such beliefs each subtle body corresponds to a subtle plane of existence, in a hierarchy or great chain of being that culminates in the physical form.

It is apparent that we are not just flesh and blood in a mechanical system, but infinitely more complex, and a rich fabric of varying forms and properties, physically biological and indefinably metaphysical.

Your physical neurobiology effects your emotional output. attampts to examine the steps from one to the other, along that continuum of being.

The Seven Subtle Bodies – Peeling Back the Layers. We can quickly break down these seven subtle bodies as such: three physical plane lower bodies, three spiritual upper bodies, and the astral body that bridges the two; however, some practitioners place the astral body among the spiritual.