An “aura” is a rainbow-like, kaleidoscopic, electromagnetic field of energy that pulses around the physical body and is attuned to our emotions, health and external circumstances. It is a technicolor dream coat of many layers: the etheric body, astral body, mental body, higher mental body, spiritual body and the casual body, each of which together give the impression of a blending together of colors and light around the skin and is, essentially, an extension of the physical self.