What they are (and aren't)
Chakras are not anatomical organs. You will not find one if you dissect a body. They are subtle-body concepts — points where, in tantric and yogic phenomenology, life-energy (prāṇa) is said to concentrate, circulate, and (when the practice succeeds) ascend along the central channel (suṣumnā) toward the crown.
Whether they are real in the way a kidney is real is a question the traditions themselves don't quite answer in those terms. They are real as a map: a description of the territory of contemplative experience that has guided practitioners for at least 1500 years. Reports from advanced yoga and meditation practitioners across traditions converge on something that the chakra model describes well, even if the seven-circle diagram is one rendering among several.
The seven-chakra system
Mūlādhāra (root, base of spine) — survival, grounding, the relationship to the body and the earth. Svādhiṣṭhāna (sacral, two inches below the navel) — emotion, sensuality, creativity. Maṇipūra (solar plexus) — will, agency, the ego in its productive form. Anāhata (heart) — love, compassion, the place where personal feeling meets impersonal care. Viśuddha (throat) — speech, expression, truth-telling. Ājñā (third eye, between the brows) — perception, intuition, the non-conceptual seeing the contemplative traditions train. Sahasrāra (crown) — union, the absorption of the individual self into what is beyond it.
Where to engage with the model
The chakra system in the index is most directly addressed inside the broader yogic curriculum. Sadhguru's Inner Engineering and its online course work with the model — though Sadhguru emphasises prāṇa and nāḍī (energy channels) more than the seven discrete wheels. Jon Kabat-Zinn's MBSR does not use the chakra map at all but cultivates the body-awareness that makes the experiences the map describes accessible.
Treat the seven-chakra diagram you see on bookshop posters as a useful first map, not a final one. Different lineages describe different numbers. The territory matters more than any single rendering of it.
— end of entry —