How to do box breathing

Box breathing is a slow breathing pattern with four equal sides. Breathe in for 4 seconds, hold for 4, breathe out for 4, hold for 4, then go around again. Four to six rounds take one or two minutes, and that's often enough to bring a racing heart and a busy head down a notch. You can do it at your desk, in a waiting room or in the car before you walk into something hard, and nobody can tell.

Try one round while you read: in, 2, 3, 4. Hold, 2, 3, 4. Out, 2, 3, 4. Hold, 2, 3, 4.

What is box breathing?

Box breathing, also called square breathing or four-square breathing, is a breathing exercise where every part of the breath gets the same count. You breathe in, pause, breathe out and pause again, and each step lasts the same number of seconds. The name comes from the shape. Four equal steps make four equal sides of a square.

The standard version is box breathing 4-4-4-4, four seconds per side, which is why you'll also see it called 4 box breathing. Some people picture a breathing box in their head and trace one side per step. Soldiers and first responders know the same pattern as tactical or combat breathing.

The holds are what set it apart. Most calming breaths lean on a long, slow breath out. Box breathing keeps every step even and adds a pause at the top and the bottom, which gives you a steady rhythm to lock on to. For the bigger picture, including belly breathing and when a long exhale works better, see our guide to deep breathing for anxiety.

How to do box breathing (4-4-4-4)

Here's how to do box breathing, step by step. Sitting is easiest while you learn, but it works standing or lying down too.

1. Get set. Sit with your back supported and your feet flat on the floor. Drop your shoulders and unclench your jaw.
2. Empty out first. Let a slow breath out through your mouth, so you start the box with your lungs empty.
3. Breathe in for 4. In through your nose, slowly, counting 1, 2, 3, 4. Let your belly expand instead of lifting your chest.
4. Hold for 4. Keep the air in gently and your throat soft. If it feels like you're clamping down, you're holding too hard.
5. Breathe out for 4. Let it go slowly and evenly, through your nose or mouth, so you're empty by the count of 4.
6. Hold for 4. Rest with your lungs empty. This is the side most people rush.
7. Repeat. Go around the box four to six times. If it feels good, keep going for up to five minutes.

A few things make it easier:

• Give your eyes a square. Look at a window, a picture frame or the edge of your screen and move your eyes along one side per step. Or trace the box with a fingertip on your leg.
• Change the count, keep it even. If 4 seconds feels like a strain, use 3-3-3-3. Once 4 feels easy, try 5 or 6. Even sides matter more than the number.
• Keep the breaths small. Slow beats big. Huge breaths can leave you light-headed.
• Watch your counting speed. Anxiety speeds up your counting without you noticing. A "one Mississippi" pace keeps you honest.
• Soften the holds if they bother you. If holding your breath makes you feel trapped or dizzy, shorten the holds to 2 seconds or drop the bottom one for now. You're still breathing slowly, and that's what matters most.

Why box breathing calms you

When you're anxious, your breathing speeds up and moves high into your chest. That's your body getting ready to act. The fast breathing then feeds the feeling. Your heart races, your chest tightens, and your brain reads all of it as proof that something is wrong.

Box breathing breaks into that loop in two ways. First, it slows you right down. One trip around a 4-4-4-4 box takes 16 seconds, which works out to under four breaths a minute. Breathing that slowly can turn up the "rest and digest" side of your nervous system, the side that slows your heart and settles your body after a scare.

Second, it gives your mind a job. Counting to four and keeping track of which side you're on takes just enough attention that the worry has less room to run. That's a big part of why people with racing thoughts tend to like it.

You can see the effect in the lab. In a randomized trial of 66 people, researchers had participants breathe normally, do box breathing or breathe with a long exhale for five minutes before a stressful task: a five-minute talk, over video, convincing two judges they were right for a job. The breathing groups followed an on-screen timer and did another minute of it partway through. Stress went up for everyone. But compared with normal breathing, box breathing blunted the rise in heart rate, anxiety and a saliva marker of stress. Cortisol, heart rate variability and scores on quick thinking tests didn't change.

The long-exhale group got the same benefit, so there's nothing magic about the square. Slowing down is what does the work. The square just makes slow breathing easy to follow when your head is noisy.

Why Navy SEALs use box breathing

Box breathing got its Navy SEAL reputation from a former SEAL commander who made it a core part of his training programs and books. That's why so many people look up navy seal box breathing. The idea runs wider than any one unit, though. Military and law enforcement teams use the same even pattern, usually called tactical breathing, to stay calm and keep their heads and hands working in dangerous situations.

It suits that world for practical reasons. You can do it silently, with your eyes open, while you wait for whatever comes next. And an even count of four is easy to remember when stress has scrambled everything else.

Military researchers have put it to the test. In a study by military psychologists in Germany, 30 healthy people used either tactical breathing or a long exhale while doing a fast attention task under time pressure, with white noise getting steadily louder. Their bodies were calmer during tactical breathing, but they did the task better with the long exhale. How stressed they said they felt was about the same either way. The researchers suggested tactical breathing may fit best when you're bracing and waiting, and a long exhale when you have to act.

That makes a handy rule for ordinary life. Use box breathing in the minutes before the interview or the hard phone call. Once you're actually talking, switch to slow, easy breaths with a longer out-breath.

Box breathing benefits

Box breathing is a short-term calming tool, and the research on it is still small but points the same way. Here are the benefits of box breathing that studies have found so far:

• Less anxiety in the moment. In a small real-life study of 47 university students, people did one minute of box breathing, one minute of cyclic sighing or nothing at moments in their day when they felt anxious or under threat. Five minutes later, both breathing groups had a bigger drop in anxiety than the group that did nothing.
• A smaller stress spike. In the 66-person trial above, box breathing before a stressful talk kept heart rate and anxiety from climbing as high.
• Fewer snap mistakes. In the student study, people made fewer impulsive errors on an attention test after box breathing, and the effect was bigger in people who tend to be anxious. They were a little slower to respond, though.
• Slower breathing. Some of the trials in the review below found people's breathing rate dropped.
• It costs nothing and nobody notices. No equipment, no special place, nothing anyone can see.

To keep it in proportion, a systematic review of randomized trials found only eight that tested box breathing on its own. Several showed short-term benefits for perceived stress, anxiety and mood, though not every study did, and the effects on heart rate and heart rate variability were mixed. The authors concluded it appears to work for short-term stress and calming yourself down, and that bigger, longer trials are still needed.

So think of box breathing as a good way to take the edge off a hard moment. It works best when you've practiced enough that your body knows the rhythm before you need it.

When to use box breathing

Box breathing is at its best before and around something hard, when your mind is running faster than the moment needs. Good times to reach for it:

• Before a presentation, an exam, a job interview or a first date.
• Before you open a tense email or pick up a call you've been dreading.
• When your thoughts are spinning at your desk and you can't focus.
• In a waiting room, on a delayed train or while you're stuck in traffic.
• When you notice your shoulders up near your ears or your jaw clenched.
• Before a conversation that makes you nervous. Here's more on getting through social anxiety when talking feels hard.

Some moments call for a different breath:

• In the middle of a panic attack. Holding your breath can feel like being trapped when your heart is already pounding. Drop the holds and make your out-breath longer than your in-breath. Here's how to spot a panic attack and ride it out.
• Right after a hard workout. In a study of 40 active university students, box breathing after intense interval training on a bike left heart rates higher than slow breathing at six breaths a minute, and it made recovery feel harder than both slow breathing and ordinary breathing. After exercise, breathe in for about 5 and out for about 5, with no holds.
• At bedtime. Box breathing works in bed for some people, but a breath with a long, slow exhale is the usual pick for drifting off. Here are breathing methods that help you fall asleep fast.

To have it ready when it counts, practice when you're calm. Two minutes a day, tied to something you already do, like your first coffee or sitting down at your desk, makes the rhythm automatic. Then when your head is spinning, you already know the way around the box.

Quick answers

What does box breathing do for you?

It slows your breathing to under four breaths a minute and gives a racing mind a simple job. For many people that brings their heart rate and anxiety down a notch within a few minutes. In a trial of 66 people, it blunted the jump in heart rate and anxiety that a stressful talk caused.

Is box breathing good for you?

Yes. For most people it's a simple, low-effort way to calm down, and early trials show short-term benefits for stress, anxiety and mood. The holds are the only part that bothers some people. If they make you dizzy or panicky, shorten them or skip them and just breathe slowly.

What is box breathing good for?

It's best for the minutes before something stressful, like a talk, an exam or a hard call. It also helps when your thoughts are racing and you need to focus. For falling asleep or riding out panic, a breath with a longer exhale usually suits better.

Follow the box with Moodu

Moodu has box breathing built in, with an on-screen timer that tells you when to breathe in, hold, breathe out and hold. It's four seconds per side for six rounds, about two minutes. You follow the timer instead of counting, which helps on the days anxiety makes you rush the numbers. Open it a few minutes before the thing you're dreading.

Once your body settles, the worry is often still sitting there. Anxiety Alleviation, Moodu's guided conversation for anxious moments, opens with: "Anxiety can be loud. On a scale of 1 to 10, where is it right now, and what's it saying?" From there it talks it through with you one question at a time, from what set it off to the first thing you'll do about it. You can type, or tap the mic and say it out loud.

Chats are encrypted before they're saved and never used for ads. Moodu is $39.99 a year after a 3-day free trial, or $4.99 a week.