What is box breathing?
Box breathing is a slow breathing pattern in four equal parts: breathe in, hold, breathe out, hold, each for the same count. At four seconds a side, one full breath takes 16 seconds, so you breathe less than four times a minute. It’s also called square breathing.
That’s much slower than your usual resting pace, and the slowing is most of the point. The equal counts give a busy mind one simple thing to follow, and the square on the screen gives your eyes something to rest on.
How to do box breathing
- Sit upright, or lie down, somewhere you can be still for a few minutes.
- Breathe out gently until your lungs feel empty.
- Breathe in through your nose for a count of four.
- Hold for four. Keep the hold soft: shoulders down, jaw and throat relaxed.
- Breathe out for four, through your nose or your mouth.
- Hold, with your lungs empty, for four.
- Repeat for three to five minutes.
If four feels long, use three. If it feels easy after a few days, try five. The count should stay comfortable from the first breath to the last; if you’re straining, the count is too long for you today.
Why does box breathing work?
Box breathing slows your breathing well below its resting pace, and slow breathing tends to move the nervous system toward its calmer, parasympathetic side. The steady count adds a second effect: it gives an overactive mind something small and repetitive to hold.
The evidence is reasonable, and it’s worth reading honestly:
- Slow breathing in general. A systematic review of slow breathing (opens in new tab), defined as under 10 breaths a minute, found it linked to higher heart rate variability, more relaxation and less anxiety in healthy adults. The review covered 15 studies, so the picture is still early.
- Box breathing specifically. In a month-long randomised trial (opens in new tab), 108 adults practised for five minutes a day. The 21 people assigned to box breathing reported better mood and less anxiety. So did the group who meditated, by a similar amount. The clearest result belonged to cyclic sighing, a pattern built around long exhales.
So box breathing is a sound choice for steadying yourself in the moment, with results similar to meditation in that trial. Any lasting change comes from regular practice.
When to use box breathing, and when another pattern suits better
| if you want to… | try |
|---|---|
| steady yourself before a talk, an exam or a difficult call | box breathing |
| wind down when you can’t sleep | 4-7-8 breathing, with its long exhale |
| practise for longer, or skip the holds | coherent breathing, with no holds at all |
Is box breathing safe?
For most people, yes. Slow breathing carries very little risk, and it’s what the NHS recommends for stress (opens in new tab).
The holds are the part to take care with:
Safety
- Keep every hold comfortable. If you feel light-headed, stop and breathe normally.
- Never practise breathing exercises in water or while driving.
- If holding your breath is uncomfortable for you, for example with a heart or lung condition or in pregnancy, use coherent breathing instead. It has no holds.
More on this in breathwork safety and contraindications.