Vedic
c. 1500–800 BCEHymn and ritual; breath, wind, and cosmos not yet distinct objects of study.
Upanishadic
c. 800–200 BCEThe first inward turn: sheaths, channels, and a five-part breath-physiology appear.
Classical Yoga
c. 200 BCE – 400 CEPatañjali and Sāṃkhya formalize mind and body into precise technical categories — no nāḍīs or cakras appear.
Tantra & Hatha
c. 800–1650 CECakras, kuṇḍalinī, bandhas, and mudrās built out as a working technology of the body — incompatibly, across lineages.
Colonial Encounter
c. 1850–1950 CETranslation into English recasts these ideas in the vocabulary of Western physiology, vitalism, and esotericism.
Global Contemporary
c. 1950–presentStandardized, marketed, and academically re-examined — often in the same sentence.