Box Breathing
It’s taught to people whose work asks them to think clearly when everything around them is loud: the military, police and firefighters.
You don’t need a uniform to use it, though. Box breathing is just as handy before a job interview, an exam or a phone call you’ve been dreading.
What is it?
01Box breathing has four equal parts: breathe in, hold, breathe out, hold. Each part usually lasts about four counts, like tracing the four sides of a square.
It’s also known as square breathing or tactical breathing. The name doesn’t matter much. What matters is the steady, even rhythm.
What may it help with?
02People often reach for box breathing before or during a stressful moment, such as a presentation, an exam or a difficult conversation, or when anxious thoughts are starting to spiral.
It can suit busy minds especially well. If “just relax and breathe” has never worked for you, a pattern to follow might.
How does it work?
03The counting is half the point. When your mind is racing, it needs something to hold onto. Counting to four, four times over, gives your thoughts a job to do, and leaves less room for worry.
The other half is pace. Box breathing slows your breathing down, which may help calm the body’s stress response.
The short holds give the breath a sense of structure. Some people find them steadying. Others prefer to shorten them, and that’s fine too.
What does the evidence say?
04In a 2026 trial, 66 adults were asked to give a speech and do mental arithmetic in a stressful virtual setting. Beforehand, they practised either box breathing, breathing with a longer out-breath, or their normal breathing. Both breathing techniques reduced the rise in heart rate, anxiety and a stress marker in saliva, compared with normal breathing [1].
Breathing with a longer out-breath worked just as well, so it’s worth trying both and noticing which one your body prefers. You’ll find more on longer out-breaths on our Slow Diaphragmatic Breathing and Physiological Sigh pages.
How to practise
05Side one: Breathe in gently through your nose for a count of four.
Side two: Hold for four.
Side three: Breathe out slowly for four.
Side four: Hold for four.
Repeat for a few rounds, or for up to five minutes. If four feels too long, three works well for many people.
Considerations
06Make the holds your own. If holding your breath makes you feel anxious, panicky or short of breath, shorten the holds or drop them altogether.
Keep holds on dry land. Don’t practise breath holds in or near water, or while driving.
You’ve read about it. Now what can you actually do?
You don’t need to have the perfect plan. Choose the next step that feels most useful for where you are right now.
Always speak with a qualified health professional before starting something new. If you are struggling right now, find immediate support.
Want to keep exploring?
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This is educational information. It is not a recommendation that this approach is right for you. Always speak with a qualified health professional.
