Box Breathing Timer: Free 4-4-4-4 Guided Exercise

What is box breathing?

Box breathing is a paced breathing pattern with four equal parts: breathe in for 4 seconds, hold for 4, breathe out for 4, then hold for 4 again. Repeat for one to five minutes. The steady count gives a busy mind something simple to follow, and the slow pace tends to leave people calmer and steadier.

It is also called square breathing, because you can picture tracing the four sides of a square, one side per count. A full cycle takes 16 seconds, so you are breathing a little under four times a minute. That is far slower than the 12 to 20 breaths a minute most adults take at rest, and that slowing down is a big part of why it feels settling.

The appeal is its simplicity. There is nothing to remember beyond the number four, so it works in a meeting, on a train, or lying awake at 2am.

How to do it, step by step

Settle in. Sit or lie comfortably. Let your shoulders drop and rest your hands wherever they feel easy.
Breathe in for 4. Breathe in gently through your nose as the circle grows, filling your belly first rather than lifting your chest.
Hold for 4. Pause with your lungs comfortably full. Keep your throat and jaw soft rather than clamping down.
Breathe out for 4. Let the air go slowly through your nose or softly parted lips as the circle shrinks.
Hold for 4. Rest with your lungs empty for four counts, then begin the next breath in.
Repeat. Continue for one to five minutes. Afterwards, take a few normal breaths before getting up.

If four counts feels like a stretch, use three. If it feels too easy, try five. Our custom breathing timer lets you set any count you like.

When to use it

Before something stressful: a presentation, a difficult call, a test, a flight.
When your thoughts are racing: counting gives your attention a simple job, which crowds out some of the noise.
To reset between tasks: two minutes between meetings or after a long stretch on your phone.
At bedtime: though if you mainly want to wind down, a pattern with a longer exhale, like calm breathing 4-6, may feel softer.

What the research says

Box breathing was one of the techniques tested in a 2023 randomized study from Stanford, published in Cell Reports Medicine. Over 28 days, 108 adults practiced five minutes a day of box breathing, cyclic sighing, cyclic hyperventilation with retention, or mindfulness meditation. All groups reported better mood and less anxiety over the month. Cyclic sighing, which emphasizes a long exhale, showed the largest increase in positive mood, so box breathing did well but was not the standout (Balban et al., 2023).

More broadly, a 2018 systematic review of slow breathing (under 10 breaths a minute) in healthy people found it was linked with higher heart rate variability, a common marker of a relaxed, flexible stress response, along with people reporting feeling more relaxed and less anxious. The authors noted that only 15 studies met their criteria, so the evidence is promising rather than settled (Zaccaro et al., 2018).

A 2023 meta-analysis of randomized trials found breathwork was associated with small to medium reductions in self-reported stress, anxiety and low mood compared with control groups, while flagging that many studies had a moderate risk of bias (Fincham et al., 2023).

Who should go gently

Breath holds are the part of box breathing most likely to feel uncomfortable. If you feel dizzy, lightheaded, tingly or short of breath, stop and breathe normally. You can also shorten the holds or drop them entirely.

Go gently, or check with your doctor first, if you are pregnant, have a heart or lung condition such as asthma or COPD, or have a history of panic attacks, where breath holding can sometimes feel like a trigger. This is a general wellbeing tool, not medical advice or treatment. If you have a health condition or concerns, check with your doctor before starting a new breathing practice.

Frequently asked questions

Is box breathing the same as square breathing?

Yes. Box breathing, square breathing and 4-4-4-4 breathing all describe the same pattern: breathe in, hold, breathe out and hold, each for the same count.

How long should I do box breathing for?

One to five minutes is plenty for most people. In a 2023 Stanford study, participants practiced breathwork for five minutes a day. Even a single minute can take the edge off.

Do I have to use a count of 4?

No. Four is a common starting point, but three or five work too. What matters is that all four sides stay equal and the breath never feels forced.

Should I breathe through my nose or my mouth?

Breathing in through your nose is usually the most comfortable and keeps the breath slow and quiet. Breathe out through your nose or softly parted lips, whichever feels easier.

Why do I feel lightheaded during box breathing?

Usually because the breaths are too big or the holds too long. Take smaller, gentler breaths, shorten the count, or stop and breathe normally until it passes.

From the makers of this timer

Want this to show up mid-scroll?

DeRot pauses your scroll and walks you through a breath like this one. Sixty seconds later your shoulders have dropped, your head feels clearer, and you carry on, calmer. No willpower needed, just a breather.

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Sources

Balban MY, et al. (2023). Brief structured respiration practices enhance mood and reduce physiological arousal. Cell Reports Medicine, 100895. doi.org/10.1016/j.xcrm.2022.100895
Zaccaro A, Piarulli A, Laurino M, et al. (2018). How breath-control can change your life: a systematic review on psycho-physiological correlates of slow breathing. Frontiers in Human Neuroscience, 12, 353. doi.org/10.3389/fnhum.2018.00353
Fincham GW, et al. (2023). Effect of breathwork on stress and mental health: a meta-analysis of randomised-controlled trials. Scientific Reports. doi.org/10.1038/s41598-022-27247-y

Box breathing timer