Guide

By Filip Kowalski · Updated September 20, 2026

Breathing Exercises for Sleep: What to Do Lying in the Dark

Person lying in bed at night with a hand on their chest

You can start this one now, on your back, eyes shut, no app to open. Breathe all the way out. Then in through your nose for a count of four, hold for seven, and out through your mouth for eight. Four rounds of that is 4-7-8, and it takes about a minute. Count at whatever speed lets you finish each part without straining, because the numbers are a ratio and not a stopwatch. If holding for seven turns into work, drop the hold and breathe in for four, out for six, for two or three minutes. Many people find counting easier to stay with than trying to relax on command. Nothing here puts you to sleep on cue, and if you go lightheaded, stop and breathe normally.

Pattern	The counts	Reach for it when	Leave it alone when
4-7-8	In 4, hold 7, out 8	You want numbers to follow	The seven-count hold feels tense
Box breathing	In 4, hold 4, out 4, hold 4	An even rhythm suits you	Waiting with empty lungs makes you anxious
Cyclic sighing	Two breaths in, one long breath out	You have a minute and want something short	A deep breath in makes you dizzy
Belly breathing	No counts, easy in, slower out	Counting is the part you hate	Lying flat makes breathing harder

4-7-8 breathing, and how long to keep going

Four rounds is a fair first go, and at a comfortable speed that’s roughly a minute. Do this:

Breathe out through your mouth until your lungs feel comfortably empty.
Breathe in through your nose for a count of four.
Hold for a count of seven.
Breathe out through your mouth for a count of eight.
Repeat three more times.

Speed the whole thing up if seven counts feels long. The ratio matters more than the clock, so a fast four-seven-eight is still four-seven-eight. Two or three minutes is plenty if it stays pleasant, and there’s no round number that flips a switch, so adding cycles and checking your progress works against you.

Slow breathing with a longer breath out is part of the relaxation techniques the National Center for Complementary and Integrative Health describes, and they ask people to talk to a healthcare provider before using one for a health problem. The 4-7-8 routine by that name doesn’t have a sleep-onset trial behind it. Treat it as a calm minute you can have any night, not a method.

Box breathing vs 4-7-8 for sleep

Box breathing gives all four phases the same length: in for four, hold for four, out for four, then hold for four with your lungs empty. One to three minutes is enough. The shape is tidy and plenty of people like it at a desk.

In bed it asks more of you. Two holds per round instead of one, and the empty-lung hold is the one that can turn into waiting for permission to breathe. That’s the opposite of what you came for at two in the morning. If you want to keep the even rhythm, shorten either hold to two counts or drop it and let the breath out run long instead.

A 2023 trial had people do five minutes a day of box breathing, cyclic sighing, faster breathing or mindfulness meditation for a month. It measured mood and breathing rate in awake adults, so it says nothing about how fast anyone fell asleep (Balban et al., 2023). Try each for a minute and keep whichever one you stop thinking about.

Cyclic sighing: two breaths in, one long breath out

This is the shortest of the four and there’s nothing to count.

Breathe in gently through your nose.
Take a second, smaller sip of air on top of the first.
Let it out slowly through your mouth until your lungs feel comfortably empty.
Carry on for one to five minutes, unhurried.

The second breath in is small, a top-up rather than another full one. If you find yourself gulping air, go back to breathing normally for a while. In that same 2023 trial, cyclic sighing came out ahead of the others on the study’s mood measure and slowed people’s breathing rate, which is a reason to try it and not a reason to expect sleep from it.

Belly breathing, if counting isn’t for you

Some nights a number in your head is the last thing you want. Belly breathing asks for nothing except letting your stomach move.

One hand on your upper chest, the other below your ribs.
Breathe in gently through your nose and feel the lower hand rise.
Let it out without pushing, and feel that hand fall.
Carry on for about five minutes. Make the breath out slightly longer only while that stays comfortable.

The aim isn’t the biggest breath you can take; it’s your shoulders staying quiet while your stomach does the moving. You can use this on its own, or as the base for 4-7-8 once the rhythm settles.

If it makes you dizzy or more anxious

Stop counting and breathe the way your body wants to. Lightheadedness usually means the breaths in were bigger than you needed, and it passes on its own. Keep each one smaller than a maximum breath, loosen anything tight around your waist, and don’t practice any of this in water or while you’re driving.

Paying close attention to your own breathing makes some people feel short of air rather than calm, and breath holding does it more than the rest. That’s a reason to pick a different wind-down, not a sign you’re doing it wrong. A body scan, tensing and releasing each muscle group in turn, or simply leaving a quiet sound on all work without you having to watch your breath. If you have a heart or lung condition, you’re pregnant, or breath control has set off panic symptoms before, ask your doctor whether structured breathwork suits you.

Fitting it into bedtime

Pick one pattern before you get into bed so you’re not choosing at midnight. Take three normal breaths first, then run the pattern for two to five minutes, then stop and carry on with whatever you usually do. Stop earlier than that if it starts to feel like a task you have to finish.

Two minutes you’ll actually do beats ten you’ll have skipped by Thursday. And if you’ve been lying there a long time trying to force sleep, get up, sit somewhere dim, and go back to bed when you’re actually sleepy, instead of running more cycles and grading each one.

Where a quiet sound fits

Counting gives your mind a job, and a steady sound in the room gives it somewhere plain to go between one count and the next, instead of the conversation you’re replaying. A quiet, unchanging sound also evens the room out, so a car door or a neighbor’s television doesn’t break your rhythm halfway through a breath out.

Brown noise is the deep rumble most Slo listeners settle on, and it’s about as uneventful as a sound gets, which is the whole point here. Play it quietly, well before you start counting, so you aren’t reaching for a phone mid-exercise.

Set it quieter than feels right: a spoken sentence in the room should sit easily on top of it. If you notice yourself listening to the sound instead of your breathing, it’s too loud or too interesting. None of the patterns need it, and they all work in a silent room.

Our guide to falling asleep faster goes into volume, timers and testing one change at a time.

When breathing isn’t the thing keeping you up

A pattern of breaths won’t outlast coffee at four in the afternoon, a work schedule that changes every week, or a partner whose snoring stops and starts. Nor will it do much on a night when the reason you’re awake is a real worry you haven’t dealt with yet.

If bad nights come most weeks and have done for months, or your days are falling apart, see a doctor. For insomnia that has run that long, the National Center for Complementary and Integrative Health points to cognitive behavioral therapy as the approach with the strongest clinical support, so it’s worth asking for by name.

Frequently asked questions

How long should you do 4-7-8 breathing?

Four rounds, which takes about a minute at a comfortable counting speed. Go on to two or three minutes if it’s pleasant, and stop sooner if the hold starts to feel like effort. There’s no number of rounds that switches sleep on, so don’t sit there adding cycles and checking whether it worked.

Is box breathing or 4-7-8 better before bed?

In bed, most people get on better with 4-7-8, because the long breath out is the part that feels settling and there’s only one hold to get through. Box breathing asks you to hold with empty lungs too, and lying in the dark that can turn into waiting for permission to breathe. Try both for a minute each and keep whichever one you stop thinking about.

Is 4-7-8 breathing dangerous?

For a healthy adult doing a few gentle rounds in bed, the usual problem is feeling lightheaded, and that passes once you go back to normal breathing. Don’t force a big breath in, don’t do it in water or at the wheel, and if you have a heart or lung condition, you’re pregnant, or breath holding has set off panic symptoms before, ask your doctor whether this kind of exercise suits you.

What should I do if breathing exercises make me anxious?

Stop counting and breathe the way your body wants to. Paying close attention to your own breathing makes some people feel short of air, and pushing through that rarely improves it. A body scan, tensing and releasing each muscle group, or a quiet sound left on in the room are all easier to stay with.

Which breathing exercise is best for sleep?

The one you can do without strain, since no single pattern has good evidence behind it as the best for sleep. Belly breathing has no counts at all, cyclic sighing is short, and 4-7-8 suits people who like having numbers to follow.

Can breathing exercises treat insomnia?

No. Slow breathing can be a calm few minutes in your wind-down, and that’s the honest limit of it. If bad nights come most weeks and have done for months, or your days are suffering, see a doctor and ask about cognitive behavioral therapy for insomnia, which is the treatment with the strongest clinical support for the long-running kind.

Does a background sound help while you count?

Many people find it does, because between one count and the next your attention has somewhere plain to go instead of tomorrow’s list. Keep it quiet enough that you aren’t listening to it, pick something steady with no melody, and turn it off on a night when you catch yourself grading the recording.

Research referenced

Balban and colleagues (2023), Brief structured respiration practices enhance mood and reduce physiological arousal.
National Center for Complementary and Integrative Health, Relaxation techniques: what you need to know.
National Center for Complementary and Integrative Health, Sleep disorders and complementary health approaches.

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Filip Kowalski is the developer of Slo and writes about sound, sleep, and focus.