Coherent breathing (resonance breathing)

How do you do coherent breathing?

Sit or lie however you’re comfortable. You don’t need a special posture, just room for your belly to move.

Slow breathing is easy to overdo. In one lab study, breathing at 6 a minute led to mild over-breathing (Marchant et al. 2025): breaths a little too big for the pace. Keep them small and quiet, as if you didn’t want anyone to hear.

Why 6 breaths a minute?

Because that’s where, for many adults, heart and breath line up. Your heart speeds up a little as you breathe in and slows as you breathe out. Your blood-pressure reflex, the baroreflex, rises and falls on its own slower cycle of roughly 10 seconds. Breathe once every 10 seconds and the two move together, so the swing in heart rate grows as large as it gets (Lehrer & Gevirtz 2014). Heart rate variability is typically greatest at about this pace (Russo et al. 2017).

In 5sOut 5s

People find this pace without trying, too. In one study, reciting the rosary or a yoga mantra slowed breathing to almost exactly 6 breaths a minute, from about 14 (Bernardi et al. 2001).

Coherent or resonant breathing: what’s the difference?

Mostly the name. Resonance frequency breathing is the research term: breathing at the exact pace where your own heart-rate swings are largest, found with a sensor during biofeedback. That pace varies from person to person, but sits near 6 breaths a minute for most adults (Lehrer & Gevirtz 2014). Coherent breathing, the name teachers and apps tend to use, simply sets the pace at about 6 for everyone, usually as 5 seconds in and 5 out.

How do I find my resonance frequency?

Properly, with a heart-rate sensor and a few minutes at each of several paces: a biofeedback practitioner watches which one makes your heart-rate swings biggest. Most adults land somewhere between about 4.5 and 6.5 breaths a minute (Meehan & Shaffer 2024). At home you can get close by feel. Try each of these for 2 or 3 minutes, on different days, and keep the one that feels easiest and most settling:

If you wear something that shows heart rate variability (HRV), it can help you compare, but don’t chase the number: comfort is a good guide. The last row keeps the same pace with a longer out-breath, which is 4-6 breathing. For the number itself, what is HRV explains it, and how to improve HRV puts this breath to work.

How long should a coherent breathing session be?

Ten minutes is the usual dose. In the trials, people practised for about 10 minutes a day for 4 weeks (Fincham et al. 2023), or 15 minutes each evening for 30 days (Laborde et al. 2019). Start with 3 minutes, the length of the player, and add a minute or two when it feels easy. If 10 minutes in one go feels long, two shorter sessions are a sensible way to begin.

Does coherent breathing work?

For your body’s rhythms, consistently. A review of 223 studies found that slow breathing raises heart rate variability (the small beat-to-beat changes that tend to grow when you’re at rest) during practice, straight after it and over weeks of practice (Laborde et al. 2022). That’s a marker of the body’s resting side, not a health outcome in itself.

For mood, it’s less clear. In a trial of 95 students, 15 minutes at their own resonance pace lifted mood more than breathing slightly faster or sitting quietly, and kept blood pressure lower than sitting quietly during a stressful task (Steffen et al. 2017).

But in the largest trial so far, 400 adults did about 10 minutes a day of coherent breathing, or a quicker placebo breath at 12 a minute, for 4 weeks. Stress, anxiety and mood improved in both groups, and coherent breathing did no better (Fincham et al. 2023). The placebo breath may itself have helped.

So: it reliably raises heart rate variability; any extra lift in mood over other gentle breathing is still unproven.

Every study on this page (10)

• Marchant et al., 2025: In 84 students, six breaths a minute raised heart-rhythm signs of calm modestly more than box or 4-7-8 breathing; none changed mood.
• Lehrer & Gevirtz, 2014: Heart rate swings most at around six breaths a minute; this review says a blood-pressure reflex is the likeliest reason.
• Russo et al., 2017: An overview of research in healthy people suggests slow breathing affects the heart, lungs and nervous system; more study is needed.
• Bernardi et al., 2001: Reciting the rosary or a yoga mantra slowed 23 healthy adults' breathing to about six a minute, with stronger, synchronised heart rhythms.
• Meehan & Shaffer, 2024: In two small studies at six breaths a minute, breathing out longer than in made no difference to heart-rhythm measures.
• Fincham et al., 2023: In 400 UK adults, four weeks of slow coherent breathing did no better than a faster placebo breathing practice; both groups improved.
• Laborde et al., 2019: In 64 healthy young adults, a month of 15-minute evening slow-breathing sessions improved self-rated sleep more than time on social media.
• Laborde et al., 2022: Across 223 studies, slow breathing raised heart-rhythm signs of calm, during practice and after, though that alone doesn't prove a health benefit.
• Steffen et al., 2017: One 15-minute session at about six breaths a minute lifted mood and kept blood pressure lower under stress in 95 students.
• Chaddha et al., 2019: Across 17 trials in people with high or borderline-high blood pressure, regular slow breathing modestly lowered blood pressure, though results varied.

When is coherent breathing useful?

When you’d like a steady rhythm with nothing to hold: as a daily 10 minutes, before bed, after a tense meeting or whenever the holds in box breathing feel like too much. With no holds and an even count, it’s one of the easiest breaths to keep going once you look away from the screen. On Apple Watch, Breathform keeps the 5 and 5 with a light tap on your wrist, so you needn’t look at all. There’s more on where it fits in how to calm your nervous system, and on what a slower pace does to the body in slow breathing benefits.

Questions people ask

Does coherent breathing lower blood pressure?

It may help a little, alongside your treatment rather than instead of it. In a review of 17 studies of people with raised blood pressure, regular slow breathing at 10 breaths a minute or fewer was linked to drops of about 5.6 mmHg systolic and 3 mmHg diastolic (Chaddha et al. 2019). Results varied a lot between studies. More in breathing exercises to lower blood pressure.

Is coherent breathing safe?

For most people it’s one of the gentlest breaths there is: no holds and no forcing. The one thing to watch is breathing too deeply. Slow breaths that are also big can make you light-headed or tingly. If that happens, make each breath smaller and quieter, or take a few normal breaths and start again.

Is coherent breathing the same as equal breathing?

Close. Equal breathing means any count where the in-breath and out-breath match, such as 4 in and 4 out. Coherent breathing is equal breathing at one particular pace, about 6 breaths a minute. Equal breathing covers the other counts, from quicker to slower, and when each one suits.

Should coherent breathing be through the nose?

Through your nose is a good default, on the way in at least: it’s quieter and makes a slow, even breath easier to pace. Breathing out through softly parted lips is fine too. What matters most is that the breath is smooth and unforced, at the same speed in both directions.

What’s the best time of day for coherent breathing?

Whenever you’ll keep it up. Some people like 10 minutes in the morning before the day crowds in; others prefer the evening. In one trial, 15 minutes each evening for a month improved how well young adults said they slept, compared with the same time on social media. Breathing exercises for sleep has a bedtime version.