Breathing exercises for anxiety: what works, what's a myth, and how to do it

TL;DR. Breathing exercises are one of the few anxiety tools with randomised trials behind them — and also one of the most over-sold. The honest summary: slowing your breath to around six breaths a minute, with an out-breath longer than the in-breath, reduces stress and physical arousal by a modest, real amount for a while. "Take a deep breath" is not the same thing and can make dizziness worse. No specific count (4-7-8, box, 4-6) has been shown to beat the others. Breathing is a skill that pays off with practice, not a button; and it is a poor stand-alone answer to panic attacks.

What the evidence actually says

A 2023 meta-analysis pooled twelve randomised controlled trials of breathwork with 785 participants. Compared with control conditions, breathing practices reduced self-reported stress with a small-to-moderate effect (g ≈ −0.35) and had similar effects on anxiety (≈ −0.32) and low mood (≈ −0.40). The authors were careful to note the trials were small and of mixed quality, with a real risk of bias — so this is "promising and worth doing", not "proven and powerful".

A separate line of research explains why slow breathing works: breathing at roughly six cycles a minute increases heart-rate variability and shifts the nervous system toward its "rest" branch. One 2023 study comparing several short daily practices found that the pattern with the longest exhale — a double inhale through the nose followed by a long slow sigh out — produced the biggest improvement in mood and the largest drop in breathing rate over a month, slightly ahead of mindfulness meditation. Five minutes a day was enough to see an effect.

So: slow, exhale-heavy, five minutes, regularly. That is the recipe the data support.

Myth 1: "Take a deep breath"

The most common instruction is also the least helpful. When you are anxious you are often already over-breathing — pulling in more air than your body is using. Big deliberate "deep breaths" on top of that push carbon dioxide lower still, which is exactly what causes light-headedness, tingling fingers and that unreal, floaty feeling. People then read those sensations as proof that something is wrong.

What helps is the opposite emphasis: a modest, unforced in-breath through the nose, and a longer, slower out-breath. If you remember one thing from this article, make it this — the exhale is where the calming happens.

Myth 2: Breathing "stops" a panic attack

Breathing exercises are often presented as the fix for panic. The evidence does not support that. Slow breathing can lower arousal somewhat and give you something to do, but a panic attack peaks and passes on its own, and clinicians who specialise in panic worry about a side-effect: if you come to believe you need the breathing to survive the attack, breathing becomes a "safety behaviour" that keeps the fear alive. The ingredients that reduce panic over time are understanding what the sensations are, allowing them rather than fighting, and gradually practising with them. Breathing is a supporting tool. For what to do during an attack itself, see How to stop a panic attack: what actually helps right now.

Myth 3: There is one correct count

4-7-8. Box breathing (4-4-4-4). Coherent breathing (5-5). Resonance breathing. Each has enthusiasts, and none has trials showing it is superior to the others. They are all variations on one idea: slow down and lengthen the exhale. Choose the one that feels comfortable — the best technique is the one you will actually use. If holding your breath makes you tense (common in anxious people), skip the hold entirely.

Myth 4: Breathing apps change your life

Breathing apps had the lowest long-term retention of the app types compared: in one analysis of real usage data, the typical breathing app had essentially no users left after thirty days. The authors note that some people may simply have learned the skill. Still, a timer with no explanation, no progression and no connection to what is going on in your life is easy to drop. Breathing pays off as a practised skill inside a bigger plan — not as a standalone widget.

How to do it: four techniques

Sit or lie comfortably. Breathe through the nose if you can. Let the belly, not the chest, do most of the moving. Soft shoulders, soft jaw. Start with three minutes.

4-6 breathing (our default)

In through the nose for a count of about four; out slowly for about six, through the nose or through slightly pursed lips. That gives you roughly six breaths a minute. No holds. If six feels long, use 3-5; the ratio matters more than the numbers. The free breathing timer paces 4-6, 4-7 and 3-5 for you.

Physiological sigh

Two in-breaths through the nose — a normal one, then a short extra top-up — followed by one long, slow exhale through the mouth, as if deflating. Repeat for one to five minutes. This is the pattern that came out ahead in the 2023 comparison; it is also the quickest way to drop arousal in a pinch.

Box breathing

In for four, hold for four, out for four, hold for four. Popular with athletes and in high-stress jobs because the counting gives the mind a job. Drop or shorten the holds if they create tension. More in box breathing: how to do it.

4-7-8

In for four, hold for seven, out for eight. Essentially a slow-breathing pattern with a long hold; some people find the hold calming, others find it the hardest part. If so, use 4-6 instead. There are no trials showing 4-7-8 puts you to sleep "in a minute". More in 4-7-8 breathing: how to do it.

When to practise

• Daily, when you are not anxious. Five minutes, same time each day, for a couple of weeks. This is where the measured effects come from, and it is what makes the skill available when you need it.
• Before a stressful moment. Two minutes before a call, a conversation, a performance.
• During a stress spike. Expect it to turn the dial down a little, not off.
• At night — in a chair, not in bed, if your mind is racing (see our article on what to do when you can't sleep).

When breathing exercises are not the right tool

• If you have asthma, COPD or another lung or heart condition, check with your doctor before practising breath-holds or long breathing sessions.
• If you are pregnant, avoid extended holds.
• If slow breathing makes you more anxious — it happens, especially in people who pay a lot of attention to bodily sensations — do not force it. Grounding (naming things you can see and hear) or movement may suit you better.
• If you find yourself using breathing to "escape" every uncomfortable feeling, that is worth noticing; avoidance tends to grow.
• If anxiety is constant and affecting your sleep, work or relationships, breathing is a small part of the answer and a conversation with a professional is a bigger one.

When to seek help

Please talk to a doctor or a mental health professional if:

• anxiety is present most days for several weeks and is hard to control;
• you have panic attacks, or have started avoiding places and activities;
• anxiety comes with persistent low mood, or with heavy drinking or substance use;
• you have thoughts of harming yourself.

If you are in danger or thinking about hurting yourself, contact emergency services or a crisis line now. These lines are free and confidential:

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FAQ

Do breathing exercises really help with anxiety?

Yes, modestly. A meta-analysis of twelve randomised trials found a small-to-moderate reduction in stress and anxiety from regular breathing practice. The effect is real but not dramatic, and it builds with practice.

What is the best breathing technique for anxiety?

Any slow pattern with an exhale longer than the inhale, around six breaths a minute. No specific count has been shown to be superior; 4-6 breathing and the physiological sigh are good defaults because they skip breath-holds.

How long does it take for breathing exercises to work?

A few minutes to lower arousal in the moment; a couple of weeks of daily five-minute practice for the measurable effect on day-to-day stress.

Can breathing exercises make anxiety worse?

They can, for some people — forced "deep breathing" can increase dizziness and tingling, and people who are very focused on bodily sensations sometimes feel more anxious when attending to their breath. Slow down, skip holds, or switch to grounding.

Is 4-7-8 breathing better than box breathing?

There is no evidence either is better. Both slow the breath; 4-7-8 has a long hold that some people find hard. Use whichever feels comfortable.