Bandha (bandha): Locks, and What They Are Said to Do

Derivation

Bandha comes from the Sanskrit root bandh, "to bind, tie, fasten or lock". The same root gives ordinary Sanskrit and Hindi words for a bond, a dam, or a contract — bandha is not a specialised yogic coinage but a common word for "lock" or "binding" put to technical use.

The three classical locks

The hatha corpus describes three principal bandhas. Mula bandha ("root lock") is a contraction associated with the perineal or pelvic-floor region. Uddiyana bandha ("flying-up lock") is a drawing-in and lifting of the abdomen, performed most fully after a complete exhalation. Jalandhara bandha ("throat lock" or "net-bearer lock") is a chin-to-chest contraction of the throat. The Hatha Yoga Pradipika describes all three in its third chapter, alongside a fourth combination — maha bandha, the "great lock" — in which all three are applied together, held during breath retention. The Gheranda Samhita gives a parallel, somewhat expanded treatment.

Crucially, the texts present bandhas as techniques applied during kumbhaka — the retained breath — not as postures held continuously through ordinary movement or breathing. The Hatha Yoga Pradipika links uddiyana bandha explicitly to the direction of prana during retention, describing it in the cosmological language of nadis and the central channel rather than in terms of muscular anatomy alone.

What they are said to do, and where that claim sits

In the texts' own framework, bandhas redirect or concentrate prana within the subtle body, particularly during retention, and are associated with the awakening described around kundalini in later hatha literature. This is a traditional physiological-cum-cosmological claim, articulated in the vocabulary of prana and nadis rather than in terms verifiable by modern anatomy or physiology. It is fair to report what the texts assert about bandha's purpose without treating that assertion as an established medical or scientific fact.

Modern usage and where it drifts

Contemporary yoga classes frequently invoke "engaging mula bandha" or "engaging your bandhas" as a general cue for pelvic-floor and lower-abdominal activation during asana practice, sometimes held continuously through a sequence rather than applied specifically during retention. This overlaps physically with the classical instruction but is a different frame: it is closer to a stability or "core engagement" cue borrowed from contemporary movement and fitness language than to the retention-paired practice the hatha texts describe. Neither usage is illegitimate, but they answer different questions — one asks "how do I keep my spine and pelvis stable while moving", the other asks "how do I direct prana during a held breath" — and conflating them can misrepresent what the classical texts are actually instructing.

Common misunderstandings

A frequent claim online is that "bandha" literally means "core" — it does not; it means "lock" or "bond", and the word predates any concept resembling the modern fitness "core". Another is that bandhas should be held constantly through every asana; the classical instruction is much more specific about timing, tied to retention rather than to general movement. A third is treating mula bandha as identical to a simple pelvic-floor (Kegel) exercise; there is real anatomical overlap, but the texts frame the practice within the broader aim of directing prana, not as a standalone exercise for continence, which is a legitimate but separate, medically defined goal.

Where this is practised on the site

The breathing guides cover bandhas as they pair with retention practice. The practices library sets bandha alongside mudra, pranayama and kriya within the fuller hatha framework, and the kundalini section discusses how bandha practice relates to accounts of kundalini awakening.