What heart coherence breathing is
Heart coherence breathing is a five-second inhale followed by a five-second exhale, with no pause at either end. That works out to six breaths a minute. The timer above holds the rhythm for you, so you can stop counting and just follow the circle.
The name comes from something that happens to your pulse while you do it. Your heart rate is never perfectly even. It speeds up slightly as you breathe in and slows again as you breathe out, and that rise and fall is called respiratory sinus arrhythmia. At an ordinary rate of twelve to sixteen breaths a minute the pattern looks ragged. Slow the breath right down and it turns into a clean, regular wave that lines up with the breath itself. On a heart-rate trace that smooth wave is what people mean by "coherence".
Researchers who study this call the same thing resonance, and resonance is the more useful word, because it works like pushing a child on a swing. Push at random moments and not much happens. Push at the swing's own natural rhythm and small pushes build a large arc. Your circulation has a natural rhythm of roughly ten seconds, set by the reflex loop that keeps your blood pressure steady. Breathing on that same ten-second cycle puts your breath in step with the loop instead of across it. Lehrer and Gevirtz, summarising two decades of this work, report that "the maximum heart rate oscillations at respiratory frequency occurred at approximately 0.1 Hz (six breaths per minute), the one frequency at which heart rate oscillates with breathing at a 0° phase relationship, i.e., exactly in phase."
That is a physiological description, not a promise. It tells you what the pattern does to the shape of your heart rate. What it feels like is a separate question, and for most people the honest answer is: slower, quieter, less busy, and a bit less interested in whatever was nagging at them five minutes ago.
How to do it
Six steps, five minutes. You do not need to get any of it perfect on the first try.
1. Sit so your ribs can move
Sit upright with both feet on the floor and your shoulders loose, or lie on your back with your knees bent. Anything that lets your lower ribs widen sideways will do. A slumped posture makes a five-second inhale harder than it needs to be.
2. Put a hand below your navel
Rest one hand on your belly, just below the navel. That hand is your feedback. It should rise on the way in and fall on the way out, while your shoulders stay more or less still. If your shoulders are doing the work, the breath is too high in your chest.
3. Breathe in for five seconds
Breathe in through your nose while the circle grows. Take five unhurried seconds over it and stop well before your lungs feel full. This is a small breath stretched over a long time, not a big one. If you feel like you are filling up, take less air.
4. Breathe out for five seconds
Let the air out over five seconds while the circle shrinks — through your nose, or through gently pursed lips if that helps you spread it out. Let it fall out under its own weight rather than pushing it. The exhale should feel like releasing, not blowing.
5. Turn around without pausing
There is no hold in this pattern. The moment the exhale ends, the next inhale begins. Aim for one continuous wave rather than two separate events with a gap between them. The audio cue marks the turn if you have sound on.
6. Keep going for five minutes
Five minutes at this rate is thirty breaths. Your attention will wander somewhere around breath four; that is what attention does. Come back to the circle without any commentary about having drifted. Stop early if you feel lightheaded or short of air.
Finding the rate that fits you
Six breaths a minute is a sensible default rather than a magic number. The rate at which heart rate oscillations peak is slightly different for each person. The same review notes that later work "refined the average frequency for highest heart rate oscillations to be at about 0.09 Hz, or 5.5 breaths per minute", and that "taller people and men, who have a greater blood supply than, respectively, shorter people and women, have lower resonance frequencies" — in plain terms, bigger bodies tend to settle a little slower.
You do not need a heart-rate monitor to work with this. Run a few sessions at 5-5, then try one at 6-6 (five breaths a minute) and one at 4.5-4.5 (about seven). One of them will feel noticeably less like work than the others. That is the one to keep. The signs you have gone too slow are air hunger at the end of the inhale and a rush to start the next breath; the sign you have gone too fast is that the pattern feels fussy and you stop noticing it.
If you want to build a custom length, the timer hub lets you switch between every pattern on the site, and the pattern builder in Pro saves your own counts.
When to use it, and when not to
This is a maintenance pattern, not a rescue pattern. It rewards being done regularly and unremarkably: five minutes before you open your laptop, five minutes in the car before you go into the house, five minutes in bed before you turn the light off. Because there is nothing to hold and nothing to count past five, most people can keep it going for ten or twenty minutes without it becoming a chore, which is what makes it hold up as a daily habit.
It is a poor choice in the middle of an acute panic surge. When your breathing is already fast and shallow, a symmetrical 5-5 asks you to slow down on both halves at once, and that can feel like being held under. In that moment a pattern with a longer exhale than inhale is easier to catch — try extended exhale breathing or cyclic sighing instead, and come back to coherence when things have settled.
Do not use it while you are doing anything that needs your eyes and hands, and do not use it as a reason to postpone care you actually need. If something has been frightening you for weeks, a breathing timer is not the answer to it.
Who should take this one gently
There are no breath-holds and no fast breathing here, so this is one of the mildest patterns on the site. It is still worth reading the list.
- If you have asthma, COPD or another respiratory condition — a five-second exhale may be longer than is comfortable. Shorten both halves rather than forcing the count, and keep your reliever inhaler where you can reach it.
- If you are pregnant — gentle paced breathing is widely used in pregnancy, but keep every breath easy and unforced, and check with your midwife or doctor before adding any new practice.
- If you have a cardiovascular condition, or you take medication for blood pressure or heart rhythm — talk to the person who prescribes it before you start a regular practice, and never adjust a dose because of anything on this page.
- If you get dizzy easily or have low blood pressure — practise sitting or lying down, and get up slowly afterwards.
- If you live with panic disorder or find that watching your breath makes you anxious — paying close attention to breathing can itself set off symptoms in some people. Keep your eyes open, keep the sessions short, and stop if the feeling is building rather than easing.
- If your hands tingle, your head goes light or your vision sparkles — you are taking in more air than you need. Make each breath smaller, not longer, or stop and breathe normally for a minute.
What the evidence shows
The clearest finding is a physiological one. Breathing slowly and evenly at around six breaths a minute produces the largest swings in heart rate; as one review of slow breathing in healthy adults puts it, "maximisation of RSA/HRV at around 6 breaths per min has since been confirmed by numerous studies", where slow breathing is defined as "any rate from 4 to 10 breaths per min (0.07–0.16 Hz)". A broader systematic review of slow breathing reports that these techniques "promote autonomic changes increasing Heart Rate Variability and Respiratory Sinus Arrhythmia paralleled by Central Nervous System (CNS) activity modifications", alongside reported increases in comfort and relaxation and reductions in anxiety and arousal.
What is much less settled is how far any of that carries. Larger heart rate variability during a session is a measurement of what your heart is doing while you breathe slowly; it is not by itself proof of a lasting health benefit. The same systematic review is blunt about the state of the field, noting "the lack in scientific literature of a standardized methodology, both when considering the experimental design and the description of breathing techniques", and the healthy-adults review says in its key points that "there is a dire need for further research into the area". Studies are often small, short and hard to blind, and a person who knows they are doing a calming exercise tends to report feeling calmer.
So the fair summary is this: 5-5 breathing reliably changes the rhythm of your heart rate while you do it, many people find it pleasant and settling, and the long-term clinical case is still being built. That is a good enough reason to spend five minutes on it. It is not a reason to treat it as medicine. There is a fuller account of the literature, with the same caveats, on our what the research says page.
Common questions
Is heart coherence breathing the same as coherent breathing or resonance breathing?
In practice, yes. They are three names for breathing at roughly six breaths a minute with an even inhale and exhale. "Resonance frequency breathing" is the term used in the biofeedback research literature, "coherent breathing" comes from a book and training method of that name, and "heart coherence" is the phrase popularised by HeartMath. The pattern you are asked to do is the same 5-5 rhythm in all three.
Should I breathe through my nose or my mouth?
Nose in is the usual advice, because it slows and warms the air and makes it harder to take too much. On the way out, use whichever is comfortable. Some people find a nasal exhale keeps the rhythm smoother; others find gently pursed lips easier to stretch to five seconds. Neither choice will spoil the pattern.
How long should a heart coherence session be?
Five minutes is the default here, which is thirty breaths. It is long enough to settle into the rhythm and short enough to actually do on a normal day. Ten to twenty minutes is common among people who practise it daily, and the timer offers those lengths in the settings panel. One minute is still worth doing when that is all you have.
Is six breaths a minute the right rate for everyone?
It is a good starting point, not a universal number. The rate at which heart rate oscillations peak differs from person to person, and researchers have reported that taller people and men tend to sit slightly lower on the scale. If 5-5 feels like a strain, try 4.5 seconds each way; if it feels rushed, try 6-6. The rate that feels effortless is usually close to the right one for you.
Will heart coherence breathing lower my blood pressure?
It is not a treatment for high blood pressure and it is not a substitute for anything your doctor has prescribed. Slow breathing has been studied in people with raised blood pressure, and our page on breathing exercises and blood pressure goes through what that research does and does not show, with the papers named. Never change or stop a medication because of a breathing practice. If blood pressure is the reason you are here, take the question to your doctor rather than to a timer.
Can I do this every day?
Yes. There are no breath-holds and no fast breathing in this pattern, which is part of why people use it as a daily practice rather than an emergency measure. A fixed slot — after you sit down at your desk, or before bed — tends to survive longer than a vague intention to do it when you remember.
A note on what this is
Help Me Breathe is a breathing timer (three sessions free, then one plan), not medical care, and nothing on this page diagnoses, treats or replaces treatment for any condition. If you are unwell, breathless, or worried about your heart, speak to a doctor. Please read the full medical disclaimer.