In Hinduism and Tantra, any of 88,000 focal points in the human body where psychic forces and bodily functions can merge and interact.
In Hinduism there are seven and in Tantra four major chakras, each associated with a colour, shape, sense organ, natural element, deity, and mantra . The most important are the heart chakra, the chakra at the base of the spine, and the chakra at the top of the head.