Coherent breathing

What is coherent breathing?

Coherent breathing is slow, even breathing at about six breaths a minute: five seconds in, five seconds out, with no holds. At this pace, the natural rise and fall of your heart rate with each breath grows larger and more regular. That’s the “coherence” in the name.

You’ll also see it called resonance breathing or resonance frequency breathing, from heart rate variability (HRV) research, and coherence or heart coherence breathing. The names come from different traditions. The practice is nearly the same: slow, smooth breathing around six breaths a minute.

How to do coherent breathing

1. Sit upright with your shoulders relaxed, or lie down.
2. Breathe in through your nose for five seconds. Let the breath go low, so your belly moves more than your chest.
3. Breathe out through your nose for five seconds, without pushing.
4. Go straight into the next breath. There’s no pause at the top or the bottom.
5. Keep going for five to ten minutes.

The breath should feel smooth and a little slower than usual, never stretched. If five seconds feels long at first, let the breath be shallower. Don’t force it deeper. It gets easier within a few minutes.

What happens in your body at six breaths a minute?

Your heart speeds up slightly each time you breathe in and slows each time you breathe out. At around six breaths a minute, that rhythm lines up with the reflex that steadies your blood pressure, and the two reinforce each other.

Researchers call the first part respiratory sinus arrhythmia, and the blood-pressure reflex is the baroreflex. When they fall into step, the rise and fall of heart rate grows to many times its size at rest (opens in new tab), and the pattern becomes smooth and wave-like. That’s what an HRV tracker shows as a jump in heart rate variability while you breathe this way.

Your exact best pace varies a little from person to person. Six breaths a minute is the usual starting point, and later work by the same researchers put it nearer five and a half for many people. The timer offers both.

What the research supports, and what it doesn’t

Of the common breathing patterns, this one has the clearest physiology behind it. The research on lasting benefits is still modest.

What it supports:

• The heart rate effect is reliable. Breathing at about six a minute consistently produces the largest heart rate swings, and HRV biofeedback is built on it (Lehrer and Gevirtz, 2014 (opens in new tab)).
• Mood and blood pressure under stress. In a controlled study (opens in new tab), people who breathed at their resonance pace before a stressful arithmetic test reported better mood and had lower systolic blood pressure during the test than people who sat quietly.
• Slow breathing in general. A systematic review (opens in new tab) linked breathing under 10 breaths a minute to higher HRV, more relaxation and less anxiety in healthy adults.

What it doesn’t show yet:

• Most studies are small and short. One session changes your heart rhythm while you’re doing it; how much carries over into the rest of your day is less clear.
• HRV biofeedback has been studied for conditions from asthma to depression, but with a clinician and a heart-rate monitor guiding the practice. Those results don’t transfer directly to a timer.

How long, and how often?

Start with five minutes, once or twice a day. Ten minutes is a comfortable longer session. HRV biofeedback programmes often ask for longer sessions, around 20 minutes. If you’re curious, build up slowly.

Regularity matters more than length. A short daily practice makes the pace familiar, which is what lets you use it when something stressful happens.

Is coherent breathing safe?

Yes, for nearly everyone. It’s slow breathing with no holds, which is the gentlest kind there is. That makes it the pattern to choose if breath-holds are uncomfortable for you, including with a heart or lung condition or in pregnancy.

More on this in breathwork safety and contraindications.