Resonant breathing, six breaths a minute

How to do it

1. Sit upright, feet flat on the floor, or lie on your back.
2. Breathe in through the nose for 5 seconds, letting the belly expand.
3. Breathe out through the nose, or gently through pursed lips, for 5 seconds.
4. No holds. One breath every 10 seconds: six a minute.
5. Continue for 5 minutes, that is 30 breaths.
6. Sit quietly for a moment before getting up.

A timer, a metronome or the breathing timer can pace you; or simply count. In France this is taught as the "3-6-5" method: three times a day, six breaths a minute, five minutes.

Rhythm for beginners and progression

Slow down over days, not within a session. If 5-5 makes you short of breath, stay at 4-4 for a week.

Where it comes from

The method comes from research on heart rate variability (HRV) biofeedback. Your heart rate rises a little as you breathe in and falls as you breathe out. The psychologist Paul Lehrer and colleagues showed that at one particular slow rate, around six breaths a minute for most adults, these oscillations become especially large: they called it the resonance frequency. From the 1990s the HeartMath Institute in California popularised the word "coherence" for this state.

The link with yoga: a rhythm older than the name

In 2001 a team led by Luciano Bernardi published in the BMJ a study of 23 healthy adults who recited the Ave Maria in Latin or a yoga mantra (written om-mani-padme-om in the study). Recited in their traditional way, both slowed breathing to about six breaths a minute and produced strong, synchronised oscillations of cardiovascular rhythms. The effect came from the rhythm imposed by the recitation, not from the words.

Yogic practice reaches the same rhythm by other routes:

• Nadi shodhana at 4 in and 8 out gives five breaths a minute; at 5 and 5, six.
• Chanted mantras and slow japa set a breath of several seconds per phrase.
• Bhramari, the humming exhalation, naturally lengthens the breath.

Patañjali already asked for a breath that becomes "long and subtle" (dīrgha-sūkṣma, Yoga Sutra 2.50). Resonant breathing is a modern, measured name for one way of getting there; it is not a technique of the haṭha texts.

What research shows

• Mechanisms. A 2014 review by Lehrer and Gevirtz explains how HRV biofeedback is thought to work, the best-supported mechanism being a strengthening of the baroreflex, which steadies blood pressure.
• Effects. A 2020 meta-analysis by Lehrer and colleagues of 58 randomised controlled studies found small to moderate effects of HRV biofeedback across many outcomes, largest for anxiety, depression, anger and performance, and concluded that it "appears useful as a complementary treatment", with more research needed. Note that biofeedback studies use a device and an individual rate; breathing at six a minute without a device is a simplified version.
• One session, 2025. In 84 students, breathing at six breaths a minute raised heart rate variability more than square or 4-7-8 breathing, but did not change mood or blood pressure meaningfully after one session, and led to mild over-breathing. Hence the advice to breathe softly.

Common mistakes

• Big, deep breaths. The rate is slow, the volume stays normal.
• Holding the breath at the top or bottom. There is no hold.
• Checking a smartwatch every breath. Feel the rhythm instead.
• Practising only in a crisis. Regular daily practice is what the studies tested.

Going further

Resonant breathing is an ideal first step before classical pranayama. Compare it with box breathing and the 4-7-8 breath, or follow the progression in breathing exercises for beginners.

Questions people ask

Sources

1. Lehrer PM, Gevirtz R. Heart rate variability biofeedback: how and why does it work? Frontiers in Psychology, 2014 DOI 10.3389/fpsyg.2014.00756 PMID 25101026 checked October 17, 2026
2. Lehrer P et al. Heart Rate Variability Biofeedback Improves Emotional and Physical Health and Performance: A Systematic Review and Meta Analysis. Applied Psychophysiology and Biofeedback, 2020 DOI 10.1007/s10484-020-09466-z PMID 32385728 checked October 17, 2026
3. Bernardi L et al. Effect of rosary prayer and yoga mantras on autonomic cardiovascular rhythms: comparative study. BMJ, 2001 DOI 10.1136/bmj.323.7327.1446 PMID 11751348 checked October 17, 2026
4. Marchant J et al. Comparing the Effects of Square, 4-7-8, and 6 Breaths-per-Minute Breathing Conditions on Heart Rate Variability, CO2 Levels, and Mood. Applied Psychophysiology and Biofeedback, 2025 DOI 10.1007/s10484-025-09688-z PMID 39864026 checked October 17, 2026

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