Breathing Exercises for Stress: What the Research Actually Says

Breathwork is everywhere right now. Apps, retreats, influencers holding their breath in ice baths. It’s easy to roll your eyes.

But underneath the hype is something simple and genuinely useful. Your breath is one of the few parts of your stress response you can change on purpose, in seconds, for free. So do breathing exercises actually help with stress? The research says they can, with some honest caveats.

How does breathing affect stress?

When you’re stressed, your body shifts into fight or flight. Healthdirect explains that your breathing speeds up to send more oxygen around your body, along with a faster heart rate and tense muscles. That’s helpful in an emergency. It’s less helpful when the “emergency” is your inbox.

Breathing is unusual because it runs automatically but you can also control it. You can’t decide to lower your blood pressure or your cortisol on the spot, but you can decide to take a slow breath. Slowing it down, especially the exhale, is one way to signal to your body that the moment of danger has passed.

What does the research say about breathwork for stress?

Two studies from 2023 are worth knowing.

The big picture: a review of 12 trials

Researchers at the University of Sussex and the University of Oxford pooled randomised controlled trials of breathwork. For stress, they found 12 trials with 785 adults. Breathwork was linked to lower self-reported stress than control groups, with a small-to-moderate effect. Results for anxiety and depression were similar.

They were also honest about the limits. Most trials had a moderate risk of bias, and the authors cautioned that results should be interpreted carefully. The lead researcher put it simply: breathwork may help some people but not others.

A head-to-head trial: which technique works best?

A Stanford trial asked people to spend five minutes a day for a month on one of three breathing techniques, or on mindfulness meditation. All groups improved. But breathwork, and especially cyclic sighing, produced greater improvements in mood and a bigger drop in breathing rate than meditation.

It’s one study, and it was done remotely with volunteers, so it’s a promising signal rather than final proof. But it’s a good reason to try cyclic sighing first.

What are three breathing techniques to try?

Start with the first one. It’s the gentlest and has the best evidence of the three.

1. Cyclic sighing (exhale-focused breathing)

1. Breathe in through your nose.
2. Without breathing out, take a second short sip of air in through your nose to fully fill your lungs.
3. Breathe out slowly through your mouth, for longer than you breathed in.
4. Repeat for five minutes, or for as little as three breaths if that’s all you have.

2. Box breathing

Breathe in for a count of four, hold for four, breathe out for four, hold for four. Repeat. Many people like the structure, and it’s easy to remember under pressure. In the Stanford trial, cyclic sighing edged it out for mood, but both are reasonable options.

3. Simple slow breathing

Breathe in gently through your nose and out through your mouth, making each exhale a little longer than each inhale. No counting needed. This is the easiest to do in a meeting, in traffic or during a difficult conversation without anyone noticing.

Which technique for which moment?

How long do you need to do it for?

Less than you might think. In the Stanford trial, people practised for five minutes a day. For an in-the-moment reset, even three slow breaths with a long exhale can take the edge off.

The bigger benefit seems to come from regular practice rather than one-off use. Think of it like brushing your teeth: short, daily and boring, and that’s exactly why it works.

How do you make breathing a habit when you’re busy?

The technique is the easy part. Remembering to do it is harder. A few things help.

• Pair it with something you already do every day: the kettle boiling, waiting at the school gate, the first minute after you close your laptop.
• Keep it short. Committing to five minutes is easier than committing to twenty, and the Stanford trial used five.
• Do it before you need it. Practising when you’re calm makes it far easier to reach for when you’re not.
• Track it for two weeks. A tick on a calendar is enough. Most people notice they’re more likely to keep going once they can see a streak.

What if breathing exercises make you feel worse?

Some people feel more anxious, not less, when they focus on their breath. That’s not a failure. If it happens, keep your eyes open, breathe normally, and try focusing on something outside your body instead, such as the feeling of your feet on the floor or the sounds around you. A short walk is another way to settle your body without paying attention to your breathing at all.

Who should be careful with breathwork?

Slow, gentle breathing is low-risk for most people. Some techniques, especially fast breathing, long breath holds or intense “power breathing” classes, aren’t suitable for everyone.

Check with your doctor first if you:

• have a heart or lung condition, including asthma
• are pregnant
• experience panic attacks, as fast breathing can trigger symptoms for some people

Healthdirect notes that faster breathing during stress can lead to hyperventilation and, for some people, panic attacks. If any breathing exercise makes you dizzy, light-headed or more anxious, stop and breathe normally.

Breathwork is a tool, not a treatment for anxiety or depression. If stress is overwhelming or you’re struggling to cope, see your GP or a psychologist.

Where does breathing fit in the bigger picture?

Breathing is one of the quickest ways to calm your nervous system in the moment. It works best alongside the other basics: sleep, movement, regular meals, switching off from work and time with people you love.

In my EDGE framework, breathwork sits under Ground, the nervous system pillar. It’s a good first practice because it takes five minutes and you can often feel a small difference quickly. That early win matters. It builds trust in your own body.

How can Hormone Magic help?

Hormone Magic is my 100-day, self-paced program built on the EDGE framework: Eat, Decide, Ground and Exercise. The Ground pillar teaches simple daily nervous system practices, including breathing, and shows you how to fit them around your cycle and a busy week.

“I've loved the meditations, I often do two a day, or meditate while stretching which I find super relaxing.”

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