Why does box breathing make my anxiety worse?

Usually the holds. A hold after the out-breath lets carbon dioxide build until the urge to breathe becomes air hunger, and a hold after a full in-breath raises pressure in the chest. Someone who is already anxious reads both as the start of something going wrong, which is the opposite of what the exercise is for. Drop the holds and keep the slow pace; the slow pace is the part that does the work.

Is it okay to skip the hold in 4-7-8 breathing?

Yes. The long out-breath is the useful part. Breathe in for four and out for eight with no pause, or shorten the exhale to six if eight feels like effort. The evidence for slow breathing comes almost entirely from patterns without holds.

What if even a long exhale feels like not enough air?

Shorten it. Four in and five or six out is still a slow breath. Breathe through the nose, do not empty the lungs completely at the end of the exhale, and keep the in-breath easy rather than deep. If ordinary breathing often feels like not enough air, that is worth raising with a clinician, because it can be a breathing pattern habit rather than anxiety alone.

Do I have to breathe through my nose?

It helps. Nose breathing slows the air down and makes a long exhale easier to control. If your nose is blocked, breathe in through the nose as far as you can and out through pursed lips, which slows the out-breath the same way.

Breathing without breath holds

If box breathing or 4-7-8 left you feeling short of air, or set off the thing it was supposed to calm, the hold was the problem rather than you. This page explains why a hold can do that, gives two slow patterns that have no holds at all, and runs them in a pacer so you can try them now. The pacer works here in the browser, with nothing to install and nothing recorded.

Extended exhale

Breathe through the nose if you can. Stop and breathe normally if you feel dizzy or short of breath. Sit or lie down, somewhere you are not driving and not in water.

Open the full pacer with spoken cues

Why a breath hold can make anxiety worse

Two things happen during a hold. After the out-breath, the lungs are near empty and carbon dioxide starts to build in the blood. The brainstem watches that level closely, and as it rises it sends an increasingly insistent signal to breathe. In a calm person that signal is a mild urge. In someone whose alarm system is already running, the same urge arrives as air hunger, and air hunger is one of the body sensations most reliably read as the start of panic. The hold after a full in-breath is a different problem: the chest is tight and the pressure inside it rises, which is the feeling anxious people are often trying to get away from.

Neither hold is where the benefit comes from. The research on slow breathing, including the one trial that put box breathing against other techniques, rests on the pace of the breath and the length of the out-breath. The comparison page goes through that evidence. The short version is that you can take the holds out of any of these patterns and keep what works.

Two patterns with no holds

Extended exhale, four in and eight out. This is the pattern the pacer starts on and the one the Allostasis app opens with. Breathe in gently through the nose for a count of four, then let the breath out slowly for a count of eight, through the nose or pursed lips. Move straight into the next in-breath with no pause. The cycle is twelve seconds, five breaths a minute. The out-breath does not have to reach eight; if it does, it should feel like releasing rather than squeezing.

Six breaths a minute, five in and five out. An even pattern with a slightly longer cycle than ordinary breathing. It is the pace most of the heart rate variability research uses, and some people find the symmetry easier than a long exhale. If five in feels like too much air, make it four in and six out. All three options are on the pacer above.

Start with two or three minutes. Five to ten minutes is a reasonable session once the pattern feels ordinary. There is nothing to achieve; the breath just needs to stay slow and unforced.

Keep it comfortable

Do not force a deep breath, and do not push the exhale to empty. If you feel dizzy, breathless, or uncomfortable, stop and breathe normally. Practise while settled somewhere safe. If you have been given breathing advice for a health condition, follow that guidance, and if you are pregnant or have a heart or lung condition, check with a clinician before changing how you breathe for more than a few minutes at a time.

What to expect

This is a pacing aid. It keeps the count so that you do not have to, and it does not measure anything about you. Most people notice the out-breath lengthening on its own after a minute or two and the shoulders dropping with it. Some notice nothing the first few times, which is also normal. The evidence for slow breathing is about changes in heart rate variability and blood pressure over minutes to weeks, and it does not promise that any one session will feel like relief.

Questions people ask

Why does box breathing make my anxiety worse?: Usually the holds. A hold after the out-breath lets carbon dioxide build until the urge to breathe becomes air hunger, and a hold after a full in-breath raises pressure in the chest. Someone who is already anxious reads both as the start of something going wrong. Drop the holds and keep the slow pace, because the slow pace is the part that does the work.
Is it okay to skip the hold in 4-7-8 breathing?: Yes. The long out-breath is the useful part. Breathe in for four and out for eight with no pause, or shorten the exhale to six if eight feels like effort. The evidence for slow breathing comes almost entirely from patterns without holds.
What if even a long exhale feels like not enough air?: Shorten it. Four in and five or six out is still a slow breath. Breathe through the nose, leave a little air in the lungs at the end of the exhale, and keep the in-breath easy rather than deep. If ordinary breathing often feels like not enough air, raise it with a clinician, because it can be a breathing pattern habit rather than anxiety alone.
Do I have to breathe through my nose?: It helps. Nose breathing slows the air down and makes a long exhale easier to control. If your nose is blocked, breathe in through the nose as far as you can and out through pursed lips, which slows the out-breath the same way.

Written by Matt Knapp, Ellicott City, Maryland. Updated 12 October 2026. Allostasis is a wellbeing practice companion. It is not a medical device, and nothing here is medical advice.

Other guides: box breathing, 4-7-8 breathing, how the three compare. Or go back to all breathing guides, or read about resonance frequency breathing in the glossary.