Nadi

Definition

A nadi is a subtle energy channel — one of the 72,000 conduits through which prana circulates in the subtle body. Three are primary: Ida (lunar, receptive, left-side current), Pingala (solar, active, right-side current), and Sushumna (central channel along the spine, the path of ascent through the chakras). The nadi network is the internal wiring of the Pranamaya Kosha.

Deep Understanding

You cannot dissect a nadi. No surgeon has ever opened a cadaver and found one. Yet every competent practitioner who has sat long enough in pranayama reports the same structural phenomena: currents along the spine, blocks at specific locations, subtle warmth rising in a predictable pattern when breath is properly regulated. The traditions that mapped this — Vedic, Tantric, Taoist under the name meridian, Tibetan under the name tsa — were not describing poetry. They were describing what the Pranamaya Kosha actually does when attention becomes refined enough to notice.

The Hatha Yoga Pradipika names the three primary channels and makes the cleansing of the nadis the precondition for mastering prana. Ida runs on the left side, associated with the moon (in modern readings, parasympathetic), cooling, receptive. Pingala runs on the right, associated with the sun (in modern readings, sympathetic), heating, active. They spiral around the central Sushumna the way the caduceus's serpents spiral around Hermes' staff — a correspondence that, in this reading, arose without borrowing, because both maps describe the same territory from different vantage points.

When Ida and Pingala are unbalanced, which is the default state of modern life, Sushumna remains closed. Consciousness stays distributed across the lower chakras, running on autopilot. When the two side channels are brought into balance — this is precisely what Nadi Shodhana accomplishes — Sushumna opens. When Sushumna opens, Kundalini begins to ascend. This is not mysticism. It is the operating sequence.

Primary sources

• Hatha Yoga Pradipika I.41 and II.4–10, trans. Pancham Sinh (Sudhindra Nath Vasu, Allahabad, 1915): the 72,000 nadis and their impurities; alternate-nostril breathing through the moon and sun nostrils cleanses them. Open-access copy
• Purnananda, Shat-chakra-nirupana, verse 1, trans. Arthur Avalon, The Serpent Power (Ganesh & Co., 2nd ed., 1924): Ida as moon on the left, Pingala as sun on the right, Sushumna between them. Open-access copy

In Practice

Tonight, before sleep, place your right thumb on your right nostril and close it. Breathe in through the left nostril for four counts. Close both with thumb and ring finger, pause for two. Release the right and exhale for four. Inhale right for four, pause, exhale left for four. That is one round of Nadi Shodhana. Do ten rounds. You have just balanced Ida and Pingala directly. Notice what settles in the mind afterward — that settling is Sushumna beginning to clarify.

The Voice of Pleroma

"The nadis are the irrigation system of the inner garden. Most seekers try to force growth where there is no water. Balance the channels first. Everything else flowers on its own."

Stefan's Alkimia. (2026, October 4). Nadi. Pleroma Guide. https://pleroma.guide/en/lexicon/nadi

Stefan's Alkimia. “Nadi.” Pleroma Guide, 4 Oct. 2026, pleroma.guide/en/lexicon/nadi.

Stefan's Alkimia. “Nadi.” Pleroma Guide. April 19, 2026. Last modified October 4, 2026. https://pleroma.guide/en/lexicon/nadi.

@online{alkimia2026nadi,
  author = {{Stefan's Alkimia}},
  title = {{Nadi}},
  organization = {{Pleroma Guide}},
  date = {2026-04-19},
  year = {2026},
  note = {Last modified 2026-10-04},
  url = {https://pleroma.guide/en/lexicon/nadi},
  langid = {english}
}