Slower4-7-8 breathing is a three-part breath: breathe in through your nose for 4 counts, hold for 7, and breathe out through your mouth for 8. At one second per count a cycle takes 19 seconds. It is taught as 4 cycles in a row, about 76 seconds, usually twice a day or at bedtime.
How to do 4-7-8 breathing
- Sit with your back supported, or lie down if you are doing this in bed. Rest the tip of your tongue just behind your upper front teeth and keep it there.
- Breathe out fully through your mouth with a soft whoosh.
- Close your mouth and breathe in quietly through your nose for 4 counts.
- Hold for 7 counts. Keep your throat and jaw loose.
- Breathe out through your mouth for 8 counts, with the same whoosh, until you are empty.
- That is one cycle. Do four.
As it is taught, the dose is small: 4 cycles, which is about 76 seconds at one second per count. The timer above is set to that classic dose. The original instruction is to stay at 4 cycles for the first month and never go past 8, which is why 8 rounds is the longest setting here.
The hold is the hard part
Almost everyone who gives up on 4-7-8 gives up because of the 7-count hold followed by the 8-count breath out. At one second per count that is a 19-second breath, a bit over three breaths a minute. Most people breathe four or five times faster than that at rest.
The fix is built into the method. The ratio matters, not the speed of the count. Count faster and you are still doing 4-7-8.
| Setting | In, hold, out | One cycle | Breaths per minute |
|---|---|---|---|
| 4 · 7 · 8 | 4 s, 7 s, 8 s | 19 s | About 3.2 |
| Shorter counts | 2.5 s, 4 s, 5 s | 11.5 s | About 5.2 |
Start with the shorter counts if you run out of air or feel the urge to gasp. Move to full seconds when the hold feels like a pause instead of a fight. If the hold never feels good, that is fine too: long exhale breathing keeps the slow breath out and drops the hold.
What it feels like
The first few times you may feel heavy and slightly light-headed. That is normal with a pattern this slow, and it fades with practice. What most people like is the breath out: eight counts is long enough that your shoulders and belly let go before it ends.
It suits the end of the day. Lying in bed with the lights off is the usual place for it, and it is one of the options in our guide to breathing to fall asleep. Before something that needs a clear head, a pattern without the long sleepy exhale fits better; see 4-7-8 vs box breathing.
What the research says, honestly
The evidence for 4-7-8 is weak. There is no proper randomized trial of 4-7-8 for sleep, despite how often it is called a sleep trick. One small 2022 study measured heart rate variability and blood pressure after 4-7-8 and found mixed changes. A 2025 comparison in 84 students found that plain slow breathing at six breaths a minute raised heart rate variability more than 4-7-8 did, and none of the patterns changed mood in a single session.
The nearest thing to sleep evidence comes from a different exercise. In a 2015 study of 28 people with insomnia, 20 minutes of slow breathing at six breaths a minute before bed was followed by falling asleep sooner and waking less. That pace is on the coherent breathing timer.
So treat 4-7-8 as a calm, slow ritual that many people enjoy at night, not as something proven to put you to sleep.
Keep the hold comfortable and never strain. If you feel dizzy or short of air, stop and breathe normally; it passes within a minute. Skip the hold if you are pregnant, have a heart or blood pressure condition, or find that holding your breath makes you anxious, and ask your doctor if you are unsure.
Questions people ask
How does 4-7-8 breathing work?
You breathe in through your nose for 4 counts, hold for 7 and breathe out through your mouth for 8. The long hold and longer breath out slow you to about three breaths a minute, far slower than normal resting breathing.
Does the 4-7-8 sleep trick really work?
Nobody knows for sure. There is no proper trial of 4-7-8 for sleep, and the claim that it works in a minute is not backed by research. Many people find it a pleasant way to settle at night, and it costs nothing to try.
How many rounds of 4-7-8 should I do?
Four cycles, which takes about 76 seconds. That is the dose it is taught with, twice a day. After a month of practice you can go up to eight cycles.
Do the counts have to be full seconds?
No. The method is defined by the 4:7:8 ratio, not by the clock. Counting at about 0.6 seconds per count gives 2.5 seconds in, 4 held and 5 out, which is much easier to start with.
Why do I feel dizzy or light-headed?
Mild light-headedness is common in the first sessions and fades with practice. Take smaller breaths, use the shorter counts, and stop and breathe normally if it does not pass.
Which is better, box breathing or 4-7-8?
They suit different moments. Box breathing keeps you alert and is used before demanding tasks, while 4-7-8 has a long breath out that suits winding down at night.
Sources
- Vierra et al. 2022: a small study of 4-7-8 breathing, heart rate variability and blood pressure. pmc.ncbi.nlm.nih.gov/articles/PMC9277512/
- Marchant et al. 2025: six breaths a minute, box breathing and 4-7-8 compared in 84 students. pubmed.ncbi.nlm.nih.gov/39864026/
- Tsai et al. 2015: 20 minutes of slow paced breathing before bed in people with insomnia. doi.org/10.1111/psyp.12333
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Last updated 11 November 2026. Written by the makers of Slower. This page is general information, not medical advice.