Another physical body is created and re-entry into the conscious world is made. The old odic astral body is dropped off, and the newly generated actinic forces give life to a new physical body and a new odic health body, along with a new astral body. The new astral body is the sum total of all preceding subconscious experience, and it may be quite mature during the time the physical body is only a child. The odic astral form that was left behind is called an astral shell and eventually corresponds to the corpse of the dead physical body. On the odic astral plane there are astral shells as well as astral bodies.
Astral shells are odic astral bodies that have been discarded by their inhabitants.
They eventually disintegrate just as the physical body left in the burial ground disintegrates. When the physical body disintegrates, all of its odic astral force continues to feed back into the astral body of the person living on the astral plane, and only when the physical body fully disintegrates does a natural reincarnation occur. However, a trained Yoga student could reincarnate to the physical plane to teach Yoga prior to this time, taking advantage of the extra odic force still traveling from his former physical body, and giving increased health and vitality to his new physical body through the vital health aspect. In this way the form of the physical body is refined and the person's evolution hastened. After a person has reincarnated, the astral shell disintegration also feeds odic force back into the new physical body through the aspect of the vital health body.