4-7-8 breathing, origin and practice
3 min read · Updated October 17, 2026 · sources checked October 17, 2026
In short
4-7-8 breathing means inhaling quietly through the nose for 4 counts, holding for 7 and exhaling through the mouth with a whoosh for 8, the tongue behind the upper teeth, for four cycles. It was popularised by the American physician Andrew Weil and is often described as inspired by pranayama. Studies are few and short; no trial shows it puts you to sleep in 60 seconds.
How to do 4-7-8 breathing
- Sit with the back straight. You can also lie down at bedtime.
- Place the tip of the tongue on the ridge just behind the upper front teeth, and keep it there throughout.
- Exhale completely through the mouth, around the tongue, with a soft "whoosh".
- Close the mouth and inhale quietly through the nose for a count of 4.
- Hold the breath for 7.
- Exhale through the mouth, whooshing, for 8.
- That is one cycle. Repeat three more times, four cycles in all, then breathe normally.
Andrew Weil's handout insists that the absolute time does not matter, only the 4:7:8 ratio: if the hold is hard, count faster. It recommends practising at least twice a day and not doing more than four breaths at a time during the first month, after which you may go to eight. It also warns that you may feel a little lightheaded at first. The breathing timer has a 4-7-8 mode.
Rhythm for beginners
| Stage | What to do |
|---|---|
| Week 1 | 4 cycles of 4-0-8 (no hold), or 3-5-6 counted fast |
| Weeks 2-4 | 4 cycles of 4-7-8, counted at whatever speed is comfortable |
| After a month | up to 8 cycles, if it remains easy |
Where it comes from
The 4-7-8 breath was popularised by the American physician Andrew Weil, a figure of integrative medicine; his own handout simply calls it a relaxation exercise, and it is often described as inspired by pranayama. The precise count, the exhalation through the mouth and the name are modern: you will not find 4-7-8 in the Hatha Yoga Pradipika or the Gheraṇḍa Saṃhitā.
Two elements do recall the classical practice:
- The ratio. A retention longer than the inhalation, and an exhalation about twice the inhalation, is the logic of the classical ratios. The Gheraṇḍa Saṃhitā (5.55) grades pranayama by counts in a 1:4:2 pattern (12-48-24 for the lowest grade); 4-7-8 is a much gentler version of the same idea.
- The tongue. Keeping the tongue against the palate recalls nabho mudrā, which the Gheraṇḍa Saṃhitā (3.9) asks the yogi to hold "wherever he may be". See mudras.
What research shows
Very little, and all of it short-term.
- Marchant and colleagues, 2025. In a laboratory study with 84 students, 4-7-8 breathing raised heart rate variability less than breathing at six breaths a minute, and none of the techniques changed mood or blood pressure in a meaningful way after one session. The authors write that square and 4-7-8 breathing "have little empirical support".
- Vierra and colleagues, 2022. In 43 healthy young adults, three sets of six 4-7-8 cycles were followed by a lower heart rate and systolic blood pressure, and by changes in heart rate variability. It was a single session without a comparison technique.
What is not supported: the popular claim that 4-7-8 makes you "fall asleep in 60 seconds". No published trial has shown it. If you sleep badly for weeks, speak to your doctor.
Common mistakes
- Taking a huge breath before the hold. Inhale quietly, not to the maximum.
- Straining at the end of the hold. If the exhalation bursts out, the hold was too long: count faster.
- Doing many cycles at once at the start. Four is the rule for the first month.
- Forcing the "whoosh". It is a soft sound, not a blow.
4-7-8 or another breath?
If the hold does not suit you, resonant breathing (six slow breaths a minute, no hold) is the best-studied calming rhythm, and simply lengthening the exhalation (in 4, out 8) gives the same 1:2 logic without retention. Compare also box breathing and, for the classical route, nadi shodhana and the breathing exercises for beginners.
Questions people ask
Who invented 4-7-8 breathing?
It was popularised by Dr Andrew Weil, whose name the Center for Integrative Medicine of the University of Arizona bears. It is often described as inspired by pranayama, but the 4-7-8 count and its name are modern.
Does 4-7-8 breathing help you fall asleep?
Many people use it at bedtime, and Weil suggests it for that. But no published trial shows that it makes you fall asleep in 60 seconds or improves sleep.
How many times should I do 4-7-8?
Four cycles at a time. Weil's handout says not to do more than four breaths at once during the first month, and at least twice a day.
What if I can't hold my breath for 7?
Count faster, keeping the 4:7:8 proportions, or remove the hold altogether. The ratio matters more than the seconds.
Sources
- 4-7-8 Breath Relaxation Exercise, a patient handout from Dr. Andrew Weil, Andrew Weil Center for Integrative Medicine, University of Arizona (updated October 2024) checked October 17, 2026
- 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
- Vierra J, Boonla O, Prasertsri P. Effects of sleep deprivation and 4-7-8 breathing control on heart rate variability, blood pressure, blood glucose, and endothelial function in healthy young adults. Physiological Reports, 2022 DOI 10.14814/phy2.15389 PMID 35822447 checked October 17, 2026
Yogide explains what the texts and the studies say; it is not medical advice. If you have a health condition, are pregnant or feel pain, talk to your doctor before practising, and stop any posture that hurts.