The concept of chakra features in tantric and yogic traditions of Hinduism and Buddhism. Chakra are believed to be centers of the body from which a person can collect energy. They are connected to major organs or glands that govern other body parts. Its name derives from the Sanskrit word for "wheel" or "turning" (cakraṃ चक्रं, pronounced in Hindi; Pali: cakka चक्क, Oriya: ଚକ୍ର, Malayalam: ചക്രം, Thai: จักระ, Telugu: చక్రo, Tamil: சக்கரம், Kannada: ಚಕ್ರ, Chinese: 輪/轮, pinyin: lún, Standard Tibetan: འཁོར་ལོ་, Wylie: 'khor lo).
Chakras correspond to vital points in the physical body but are generally understood as being part of the "subtle body" which cannot be found through autopsy. While breath channels (nāḍis) of yogic practices had already been discussed in the classical Upanishads, it was not until the eighth-century Buddhist Hevajra Tantra and Caryāgiti, that hierarchies of chakras were introduced.
Texts and teachings present different numbers of chakras Also different physical structures are considered chakras. David Gordon White thus emphasizes:
"In fact, there is no "standard" system of the cakras. Every school, sometimes every teacher within each school, has had their own cakra system."Read more about Chakra: Etymology, Characteristics, Hindu Tantra, Buddhist Tantra, Western Models and Interpretations, Description, Criticism of The Chakra Concept, Comparisons With Other Esoteric Traditions