What box breathing is
Box breathing, also called square breathing, has four equal sides: breathe in for four counts, hold for four, breathe out for four, and stay empty for four. At four seconds a side, one full breath takes sixteen seconds, under four breaths a minute, and that slow, even pace is what most people find calming.
Because every side is the same length, it is easy to learn and easy to keep going. It is often taught as a way to steady yourself before something stressful, such as a presentation, an exam or a hard conversation, and it works just as well for winding down at the end of a day.
How to use this breathing timer
Sit comfortably and press Start. A calm voice settles you in for twenty seconds, then speaks each phase as it begins: breathe in, hold, breathe out, stay empty. There are twelve rounds, then thirty seconds of free breathing, about four minutes in all. A singing bowl rings as the longer steps end, and there is no ticking to count against.
You never need to watch the screen, so close your eyes once it starts. If four counts feels long, breathe more gently rather than faster; the pace matters more than how much air you move.
Three tips for paced breathing
Breathe through your nose
In through the nose keeps the breath slow and quiet. Let your belly move rather than your shoulders: if your shoulders rise, you are breathing too high in your chest.
Keep the holds soft
A hold is a pause, not a strain, so keep your throat relaxed. If you feel light-headed or uncomfortable, skip the holds and simply breathe slowly until the session ends.
Practise before you need it
A few rounds on an ordinary day make the pattern familiar, so it is there when a stressful moment arrives. It also makes a good bridge between the working day and the evening.
Who it is for
Anyone who wants a quick, structured way to calm down: before a meeting, after a difficult call, in a waiting room or in bed. It needs no experience and no equipment, and four minutes fits almost anywhere in a day.
If you want a longer out-breath to help you sleep, try 4-7-8 breathing. If you have only a minute or two, the double-inhale sigh is the shortest of the three.