Our physical body is an interrelated collection of atoms and molecules which are energy. It is also the outward manifestation of the inner Spirit.
There are many belief systems associated with this concept, most of them coming from eastern mysticism and adapted for the western mind. See also how Dr. Oz explains how to reduce stress and anxiety if you would take just a few minutes each day and concentrate on your breathing.
Within these systems, there are complex hierarchies which a serious student can peruse at leisure. Each of those rainbow colors is centered in an energy vortex called a *Chakra.* The *Aura* also belongs here, for it is part of the energy system of the body.
The Aura is the most visible outer part of the inner being. It can be seen by sensitives and felt by many. Think in terms of *vibes.* It is nothing more than sensing a person’s aura.