Uḍḍīyāna bandha, the abdominal lock

The name

Uḍḍīyāna comes from ud-ḍī, to fly up (the dictionary gives uḍ-ḍīna, "flown up, flying up"). The Hatha Yoga Pradipika explains the image itself: by this lock, prāṇa, "the great bird", flies up into the central channel without rest. You can also see it: the abdomen rises and hollows under the ribs.

What the texts say

The Hatha Yoga Pradipika gives uḍḍīyāna six verses (3.55-3.60 in the Sanskrit text on GRETIL, 3.54-3.59 in Pancham Sinh). The method fits in one line:

उदरे पश्चिमं तानं नाभेरूर्ध्वं च कारयेत् । उड्डीयानो ह्यसौ बन्धो मृत्युमातङ्गकेसरी ॥

udare paścimaṃ tānaṃ nābher ūrdhvaṃ ca kārayet | uḍḍīyāno hy asau bandho mṛtyu-mātaṅga-kesarī ||

One should draw the belly back, and above the navel: this lock, uḍḍīyāna, is a lion to the elephant of death.

The next verses say that uḍḍīyāna is easy "when learnt from a guru", that an old man who practises it becomes young again, that the parts above and below the navel are drawn back towards the spine, and finally: "Of all the Bandhas, Uddiyana is the best" (3.57-3.59 in Sinh's 1914 translation). In the chapter on breath, the text places it at the end of the retention and the beginning of the exhalation (2.45), and the next verse joins the three locks: contracting below, closing the throat and "drawing back the middle" (2.46).

What the lock does physically

The full uḍḍīyāna bandha is made only with empty lungs. After a complete exhalation you close the throat and make a "false inhalation": the ribs open as if you were breathing in, but no air enters. The diaphragm rises, the abdominal wall is drawn in and up, and a hollow appears under the ribcage. Nothing is pushed or squeezed; it is a suction. That pressure change inside the chest and abdomen is exactly why the lock matters for the heart, for hernias and in pregnancy.

Steps

Before you start: empty stomach, bladder and bowels emptied, ideally in the morning.

Stage 1: standing

1. Stand with the feet hip-width apart, knees slightly bent.
2. Breathe in through the nose.
3. Lean forward and place the hands on the thighs just above the knees, arms straight.
4. Breathe out completely, emptying the lungs as far as is comfortable.
5. Lungs empty, lower the chin slightly, close the throat and open the ribs as if breathing in, without letting air in. The belly draws in and up.
6. Hold three to five seconds, no more at first.
7. Release the belly first, then lift the head, then breathe in slowly.
8. Stand up and breathe normally for several breaths. Three rounds.

Stage 2: seated

When the standing form is easy, practise it in a firm cross-legged seat, hands on the knees, arms straight, with the same sequence.

Rhythm for beginners and progression

What research shows

Only two small studies indexed in PubMed (searched in October 2026) have looked at uḍḍīyāna bandha itself, both measuring immediate effects.

• In healthy people. Thirty healthy students did either uḍḍīyāna bandha or ten minutes of quiet sitting, in random order on two days (Nataesh and colleagues, 2025). During the lock, markers of both branches of the autonomic nervous system rose together, which the authors found hard to interpret; diastolic blood pressure increased immediately after the practice and returned to normal within ten minutes, with a calmer, parasympathetic pattern at that point.
• In people with hypertension. In a randomised study of sixty hypertensive patients aged 40 to 60, three supervised rounds of uḍḍīyāna bandha were followed immediately by heart rate variability changes the authors read as better autonomic balance, compared with quiet rest (Govindasamy and colleagues, 2024). Blood pressure itself and long-term effects were not the measured outcome, and the authors call for larger, longer studies.

Neither study shows that the lock treats anything, and the first shows a short rise in blood pressure. That is why the traditional precaution stands: with high blood pressure, do not practise it on your own.

Common mistakes

• Inhaling before releasing the belly. Release, lift the head, then breathe.
• Pushing the belly in with the muscles instead of creating the suction with the ribs.
• Holding too long and gasping afterwards.
• Practising after a meal.
• Confusing it with the light belly engagement of flow classes.

In context

Uḍḍīyāna is the third lock to learn, after jalandhara bandha and mula bandha; the three together form mahā bandha (bandhas). From it grow agnisāra and nauli, the abdominal churning. Where retentions fit in the breath work is explained on types of pranayama.

Questions people ask

Sources

1. The Hatha Yoga Pradipika, translated by Pancham Sinh, Sacred Books of the Hindus vol. XV part 3 (1914), Internet Archive checked October 17, 2026
2. Svātmārāma, Haṭhayogapradīpikā, Sanskrit text, 2.45-2.46 and 3.55-3.60 (GRETIL, University of Göttingen) checked October 17, 2026
3. Srisa Chandra Vasu (tr.), The Gheranda Samhita, Sacred Books of the Hindus vol. XV (1914-1915), lesson 3, verses 10-11, Internet Archive checked October 17, 2026
4. Nataesh SR et al. Immediate effects of Uddiyana bandha on blood pressure and heart rate variability in healthy individuals: a randomized crossover study. Journal of Bodywork and Movement Therapies, 2025 DOI 10.1016/j.jbmt.2025.08.022 PMID 41316586 checked October 17, 2026
5. Govindasamy K et al. Immediate Effect of Uddiyana Bandha on Heart Rate Variability in Patients with Hypertension: A Randomised Controlled Study. Annals of Neurosciences, 2024 DOI 10.1177/09727531241299258 PMID 39678718 checked October 17, 2026

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