Structured counts

4-7-8 breathing: Dr. Weil's bedtime count

By GyroscopeUpdated November 15, 202611 sources

Family

Structured counts

Breaths

3.16 a minute

Carbon dioxide

Steady, a little higher on the holds

How well tested

Weak

Risk

Low

Timer

Run it on this page

4-7-8 breathing is Dr. Andrew Weil’s pattern. You breathe in through your nose for 4, hold for 7, and breathe out through your mouth with a whoosh for 8, four breaths at a time. It’s the slowest of the popular patterns, with the longest out-breath, and a few small trials found it eased anxiety. Nobody has shown it knocks you out in a minute.

Online, 4-7-8 is the breathing trick that puts you to sleep in 60 seconds. Even Weil’s own university ran a 2021 headline saying it “promises to help you fall asleep in 60 seconds”. The handout itself makes no such promise. It calls the pattern “a natural tranquilizer for the nervous system” and lists falling asleep as one use among several, along with any upsetting moment, before you react.

What it is and where it comes from

Andrew Weil founded the Andrew Weil Center for Integrative Medicine at the University of Arizona, and the pattern comes from a one-page patient handout on its site. The university describes it as based on ancient meditation and breathing techniques, and calls it the Relaxing Breath. The handout itself sticks to the counts, the tongue position, the limits and when to use it.

The rules in it are oddly specific. Breathe this way at least twice a day, no more than four breaths at a time for the first month, and later up to eight if you want. The ratio is what counts, the handout says, and the speed can change. If you can’t hold for seven, count faster and keep the 4, 7 and 8 in proportion.

That precision is why researchers can copy it exactly. A 2026 trial in Turkey used Weil’s dose, four breaths in the morning and four in the evening, for six weeks.

How to do it

1. Place your tongue. Sit with your back straight if you can. Put the tip of your tongue on the ridge just behind your upper front teeth, and keep it there the whole time.
2. Empty out. Breathe out completely through your mouth, with a whoosh.
3. In for 4. Close your mouth and breathe in through your nose, without a sound, for a count of four.
4. Hold for 7. Count at the same speed you used for the in-breath.
5. Out for 8. Breathe out completely through your mouth with a whoosh, around your tongue. Purse your lips a little if that feels awkward.
6. That’s one breath. Do three more, four in all, at least twice a day.

The timer below stops at four breaths unless you raise it, since that’s the first month’s limit in Weil’s handout. At one count a second, four breaths take 76 seconds.

A simple way to picture it

The hold is like a car idling at a red light. The engine keeps running the whole time, and you’ve only got your foot on the brake. Your breathing works the same way. Your brainstem keeps its rhythm ticking through the hold, and you just keep your chest still until the light changes and the long whoosh begins.

What happens in your body

One breath takes 19 seconds, so 4-7-8 runs at about 3.2 breaths a minute, against the 12 to 18 you take at rest. The out-breath is twice the in-breath. Your heart slows a little on every out-breath, so a long one gives it more time to slow.

The hold is the unusual part. You start it with full lungs, and a 2006 review of breath holds found that people can hold longer after a big breath in, which helps. The Brigham Young team expected the hold to raise carbon dioxide a little, and it was the hold-free pattern, six a minute, that made students over-breathe instead. Breath holds has the long version.

What the evidence shows

Most of the trials come from hospitals and clinics in Turkey.

These are small, the patients knew which group they were in, and most comparison groups got routine care or nothing. The tinnitus trial is the only trial of 4-7-8 on its own that we found with a sleep score, and it used a questionnaire. We couldn’t find a trial of 4-7-8 in people whose main problem is insomnia, or one that measured sleep in a lab or on a device.

For slow breathing before bed in general, a 2026 review pulled together nine studies with 457 people. People rated their sleep better, mostly after 28 to 30 days of practice. The studies that measured sleep with a wrist device or in a sleep lab didn’t find a clear change, though three of them lasted only one day.

Who should skip it

If holding your breath makes you anxious, skip the hold and use six a minute. Weil says a little lightheadedness at first is normal and passes. If it doesn’t pass, count faster and keep the same ratio. Stick to four breaths for the first month. Ten minutes of 4-7-8 in bed would be about 32 breaths, eight times what the handout suggests.

Breathing won’t fix everything at night. Loud snoring, waking up gasping, or someone seeing you stop breathing in your sleep are questions for a doctor and a sleep study, and oxygen.guide covers sleep apnea.