Energy Medicine includes all concepts of energy: light, sound, electro-magnetism, body, mind and spirit. In addition to concepts central to electro-chemical physiology, older traditions of “life force” or “élan vital” are commonly found in the discourses of Energy Medicine. From Taoist alchemy and Chinese Medicine comes the principle of Chi, with its Cosmic and Microcosmic cycles and flows through the channels or meridians in the physical body. From Yogic Hinduism comes the breath or Prana, and the principles of multiple energy vortices in the body – the Chakras, and especially the concepts of multiple bodies beyond the flesh and blood physiological body, conceived in various systems as layers such as the etheric body, the astral body, the emotional body, the mental body, and the spirit bodies.