4-7-8 breathing for sleep

How do you do 4-7-8 breathing?

The instructions Andrew Weil publishes are short. Sit up straight while you are learning; once you know it, any position will do, including lying in bed.

1. Rest the tip of your tongue on the ridge of tissue just behind your upper front teeth, and keep it there throughout.
2. Breathe out completely through your mouth, with a whoosh.
3. Close your mouth and breathe in quietly through your nose to a count of 4.
4. Hold your breath to a count of 7.
5. Breathe out completely through your mouth, with a whoosh, to a count of 8.
6. That is one breath. Do three more, four in all.

Two details in the original matter more than the numbers. The counts don’t have to be seconds: what Weil asks you to keep is the ratio, and if the hold is hard, you count faster. And he keeps it short — no more than four breaths at a time for the first month, and eight at most after that.

Where does 4-7-8 breathing come from?

From Andrew Weil, the American doctor, who teaches it as the Relaxing Breath, one of three breathing exercises on his website. He calls it “a natural tranquilizer for the nervous system”, and suggests using it whenever you feel tense or upset, and to help you fall asleep.

Researchers who have tested it describe the pattern as Weil’s, and as based on pranayama, the breath control of yoga (Vierra and colleagues, 2022). Weil’s own page doesn’t say where it comes from. What is distinctive about it is the long hold in the middle, and the out-breath twice as long as the in-breath.

Does 4-7-8 breathing help you fall asleep?

Nobody seems to have checked. We could not find a trial that measured how long people took to fall asleep after 4-7-8 breathing, night by night, in a sleep diary or a sleep laboratory (Europe PMC and the wider web, searched October 2026). What has been measured is narrower:

• Heart rate, minutes later. In a 2022 study of 43 healthy adults aged 19 to 25, 22 of them short of sleep, three short sets of 4-7-8 breathing were followed straight away by lower heart rate and systolic blood pressure in both groups. The change in heart-rate variability usually read as calming appeared in the people who had slept normally, and the authors concluded the exercise helped most in them (Vierra and colleagues, 2022).
• Against plain slow breathing. In a 2025 comparison, 84 college students tried four breathing patterns. Breathing evenly at 6 breaths a minute raised heart-rate variability more than 4-7-8 or square breathing did, and none of the patterns made a meaningful difference to blood pressure or mood. The authors start from the observation that square and 4-7-8 breathing are popular with psychotherapists but have little evidence behind them (Marchant and colleagues, 2025).
• Sleep by questionnaire, over weeks. In a 2026 trial in 48 people with tinnitus, 6 weeks of 4-7-8 practice on top of an information session lowered insomnia-severity scores, along with tinnitus, anxiety and stress scores, compared with the information session alone (Kirazli and colleagues, 2026). That is a questionnaire about recent weeks, in people with a particular complaint, not a measure of how fast anyone fell asleep.

Heart-rate variability is not sleep. A calmer heart for a few minutes is a reasonable thing to want at bedtime, but it is a different measurement from falling asleep sooner, and none of these studies took the second one.

What does slow breathing do?

More is known about slow breathing in general than about this pattern in particular. A 2018 systematic review of 15 studies of breathing slower than 10 breaths a minute, all in healthy adults, found that it raised heart-rate variability and changed the brain’s electrical rhythms. People reported more comfort and relaxation and less arousal and anxiety — and, in some studies, more vigour and alertness, which is worth knowing at bedtime (Zaccaro and colleagues, 2018). The studies were too different from one another for the authors to pool their results.

The closest thing to a sleep test of slow breathing is small. In a 2015 study, 14 people who reported insomnia and 14 good sleepers had their heart rhythms measured while breathing at 6 breaths a minute. When the people with insomnia practised that slow breathing for 20 minutes before going to sleep, overnight recordings showed them falling asleep sooner, waking less and sleeping more efficiently (Tsai and colleagues, 2015). It was not 4-7-8 breathing — an even rhythm, no hold — and a study of 14 people is a starting point, not an answer.

That difference in rhythm is worth a moment. Counted in seconds, a round of 4-7-8 takes 19 seconds: about three breaths a minute, with a long pause in the middle. That is slower than the 6 breaths a minute used in both the 2015 study and the 2025 comparison, which makes Weil’s own fix for a hold that feels too long — count faster — a good one.

How do you do 4-7-8 breathing without forcing it?

• Never strain the hold. If 7 feels like a struggle, count faster; the ratio is the exercise, not the length. A held breath you are fighting is the opposite of what you are after.
• Stop if you feel light-headed. Weil’s page says mild light-headedness at first will pass. We would rather you stop, breathe normally for a while, and go shorter next time.
• Keep it to four breaths. That is all the original asks for at the start, and it keeps the exercise from turning into a long count.
• If you have a heart or lung condition, ask a doctor first. Holding your breath and changing how you breathe are worth a word with someone who knows your health.
• Don’t score it. Four breaths and no sleep is not a failure. The breathing is a way to settle, not a test.

What should you do after the four breaths?

Stop counting. Counting is the one part of 4-7-8 that can work against you at bedtime: like counting sheep, it is orderly and easy, and it leaves room for the worry beside it (does counting sheep work?). Once the four breaths have slowed you down, let your breath go back to its own pace and give your attention somewhere softer to go — one calm scene filled in slowly, or a run of unrelated pictures, one after another, which is cognitive shuffling.

And keep it from becoming a technique you are performing. Sleep is largely automatic, and it can be held off by paying attention to it and by trying to make it happen (Espie and colleagues, 2006); why trying to sleep keeps you awake explains. If you find yourself checking whether the breathing is working, the checking is the thing to let go of.

If 4-7-8 doesn’t suit you, other techniques come at bedtime from different sides: the military method relaxes the body muscle by muscle and then holds one calm image, paradoxical intention takes the effort out by aiming to stay awake, and how to fall asleep fast ranks every technique by the evidence behind it.

Is breathing part of insomnia treatment?

Yes, as one form of relaxation therapy. The American Academy of Sleep Medicine’s task force lists abdominal breathing among its examples of relaxation exercises, alongside progressive muscle relaxation and guided imagery, and its 2021 guideline suggests relaxation therapy for chronic insomnia — a conditional recommendation, the weaker of its two grades (Edinger and colleagues, 2021). That is a recommendation for a practised therapy, not for any one breathing pattern.

If trouble sleeping has gone on for months and is affecting your days, see a doctor. For chronic insomnia, the treatment to try first is cognitive behavioural therapy for insomnia (CBT-I), which the American College of Physicians recommends as the initial treatment (Qaseem and colleagues, 2016). A breathing exercise is for an ordinary night, not a substitute for care.