The technique

Four counts each way, and a steady head

Box breathing is an even 4-4-4-4 rhythm: in, hold, out, hold. It is the technique athletes, first responders and special forces use to steady themselves under pressure, and it works in about a minute. Here is exactly what it is, and when to reach for it.

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Gentle and low-risk, but never practise while driving. Full notes below.
A Box Breathing session running in Huff: the square, and the dot travelling the side you are on
One cycle

Four equal sides

That is the whole method. Huff counts every side, so you can close your eyes and just follow it.

1

In for four

Through the nose, smoothly, filling comfortably. Not a gasp and not a maximum: you should be able to hold a conversation at the top of it.

2

Hold for four

Air in, throat relaxed. Do not clamp down or brace against it. If four feels long, that eases within a couple of cycles.

3

Out for four

Let it go steadily rather than pushing it out. The exhale should end where a relaxed breath ends, not squeezed empty.

4

Hold for four

The side everyone forgets. Wait with the air out, stay relaxed, then begin the next breath in. This is what makes it a box rather than a wave.

One cycle is sixteen seconds. Most people feel the difference within five or six of them.

The shape of a cycle

Why it is called a box

Four equal phases, so the trace comes out square. Drawn to real time, and the dot runs it at real speed, so you can breathe along with it right here.

lungs fullair outBreathe in4sHold4sBreathe out4sHold4s

One cycle is sixteen seconds, so a five-minute session is about nineteen of them. Huff paces every one, on screen or out loud.

When to use it

Reach for it before, not after

Box breathing is a focus tool. It is at its best in the minutes before something that needs your full attention, and it is very good at pulling you back when something has knocked you sideways.

Before deep work

Best use

A few cycles at your desk before you start. It clears the noise from whatever you were doing five minutes ago.

Before a hard conversation

Best use

Or an interview, a talk, a difficult call. It steadies the voice as much as the head.

Before a big moment

Under pressure

Athletes use it on the line and first responders use it on the way in. It is built for exactly this.

When something has rattled you

Recovery

Bad news, a near miss, an argument. A few cycles puts you back in the room.

Any time you are wired

Anywhere

Sitting, standing, in a queue, on a train. It needs no space and nobody can tell you are doing it.

Not for sleep

Use 4-7-8

The even rhythm sharpens you. For winding down at bedtime, the long exhale of 4-7-8 does the opposite job better.

In the app

You never have to count anything

Huff paces all four sides, so the counting stops being something you do and starts being something you follow. Eyes open for the visual, or eyes closed and follow the sound.

  • Every side paced, on screen and in sound
  • Set it to stop itself after one, four or eight minutes
  • A walkthrough the first time, so nothing is a surprise
  • Your sessions saved afterwards, if you want to watch the habit build
Box session settings in Huff: music, and an auto-stop after one, four or eight minutes

Doing it well

Box breathing is gentle. Unlike the deep-breathing techniques, it does not deliberately change your blood chemistry, so there is very little to go wrong. A few things still make it work better.

  • Do not force any side. If four counts feels like a strain, shorten all four to three and build up. An even rhythm at three beats a strained one at four.
  • Stay relaxed in the holds. Bracing your throat or shoulders turns a calming technique into an effortful one.
  • Sit or stand, whatever suits. There is no need to lie down, which is part of why it travels so well.
  • Not while driving. Any breathing practice takes attention you should be spending on the road.

If you feel lightheaded, stop and breathe normally: it will pass in a few seconds. If you are pregnant, or have a heart or respiratory condition, check with your doctor before taking up any breathing practice.

The other techniques: for winding down at bedtime, try 4-7-8 breathing. For the deep-breathing-and-hold method, see Wim Breathing.

Try a few cycles now

Huff is free to download and paces the whole thing. Box breathing is there the moment you open it.

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