All matter is energy and thus humans, being composed of matter, are literally beings of energy. We can be seen as networks of complex energy fields. Our physical matter system resonates at a lower frequency than the higher matter energy systems that surround it. These higher energy systems can be referred to as subtle bodies, auric field, aura or human energy field. These systems are physically superimposed upon one another in the same space. (think of stacking measuring cups, one withing the other) There are numerous layers involved in these higher energy systems, which are composed of our physical, emotional, mental and spiritual bodies.