Four equal sides
Box breathing has four steps of the same length, like the four sides of a square: breathe in for 4 seconds, hold for 4, breathe out for 4, hold for 4. The circle above does the counting for you. It grows while you breathe in, stays full while you hold, shrinks while you breathe out and stays small during the second hold. One cycle lasts 16 seconds, which slows your breathing to under four breaths a minute.
The technique goes by many names: square breathing, four-square breathing, 4×4 breathing, equal breathing, or sama vritti in yoga, where it comes from. It is often associated with the US Navy SEALs, who use it to stay calm and focused under pressure.
How to do box breathing
- Sit upright, feet flat on the floor, shoulders relaxed. You can also stand or lie down.
- Breathe out slowly to empty your lungs: the session starts with that.
- Breathe in through your nose for 4 seconds, letting your belly expand.
- Hold for 4 seconds, without clenching your throat.
- Breathe out gently for 4 seconds.
- Hold again for 4 seconds, lungs empty, then start the next side.
Holds should feel soft, not like straining under water. If 4 seconds is too long at first, breathe less deeply rather than forcing: the counts get easier after a few sessions.
When to use it
| Moment | Why it helps |
|---|---|
| Before a presentation, an exam or a match | Counting gives your mind one simple job and slows your breathing down |
| After a stressful call or meeting | A few cycles mark a clear break before the next task |
| When you cannot fall asleep | Lying down, with the sound on and your eyes closed |
| During a work break | Pair it with the breaks of the Pomodoro timer |
Practitioners often suggest once or twice a day, on calm days too, so the technique is already familiar when you need it.
Be gentle with the holds
If you feel lightheaded, stop and breathe normally. If you are pregnant or have a heart or lung condition, ask your doctor before practicing breath holds. For a version without holds, try coherent breathing at six breaths a minute.