Chakra , sometimes spelled Cakra or Cakka, is any center of subtle body believed to be a psychic-energy center in the esoteric traditions of Indian religions.
The concept is found particularly in the tantric traditions of Hinduism, Buddhism and Jainism. They are conceived as an energy focal point, bodily functions or psychic node in the subtle body. The Chakra theories are an elaborate part of the Kundalini system. These theories differ between the Indian religions, with esoteric Buddhist literature mentioning four Chakras, while esoteric Hindu texts stating seven. They are believed to be part of the subtle body, not the physical body, and connected by energy channels called Nadi. In the Kundalini version of yoga, breath exercises focus, in part, on mastering and channeling energy through Chakras