Breathing techniquesModerate supportReviewed 2026-08-02

Resonant (coherent) breathing at about 5.5 breaths a minute

Resonant breathing - also called resonance breathing or coherent breathing - means slowing your breath to about five to six breaths a minute, often around 5.5 seconds in and 5.5 seconds out. This slow, even pace is the one most studied for increasing heart-rate variability.

The rhythm5.5 · 5.5 · ≈ 11s

The pace matters more than perfection: anywhere near six breaths a minute, with no holds, is the idea. It suits almost everyone.

The rhythm

Rhythm: 5.5 · 5.5 (one cycle ≈ 11s)
Breathing phases in seconds
PhaseSeconds
Inhale5.5s
Exhale5.5s

About 5.5 in and 5.5 out - roughly 5 to 6 breaths a minute. Some people find their personal "resonance" pace slightly faster or slower.

How to do it

  1. Slow to about six breaths a minute
    Roughly 5-6 seconds in and the same out.
  2. Keep it even and unforced
    No holds; let the breath be smooth.
  3. Continue for several minutes
    The effect builds with a little time.

Common uses

  • A calm, steady baseline practice.
  • HRV-oriented breathing.
  • A gentle everyday reset.

What the evidence suggests

Evidence: Moderate support

Breathing near the "resonance frequency" of about six breaths a minute is associated with the largest increases in heart-rate variability, and controlled studies report improvements in HRV and mood. Individual resonance frequencies vary.[1][2]

Safety

A gentle, hold-free technique that suits most people.

Beginner version

If 5.5 feels slow, start around 5 in and 5 out and ease toward a slower pace.

Not the same as "resonant breath sounds"

If you arrived here searching for resonant breath sounds: that is an unrelated medical term. When clinicians examine the chest, "resonant" describes the normal, hollow note a healthy lung makes on percussion and auscultation - it has nothing to do with breathing techniques. The resonant *breathing* on this page is a paced-breathing practice, named for the "resonance" between breath and heart rhythm at a slow pace. Questions about your own breath sounds belong with a clinician.

How BreathMate implements it

BreathMate can guide a resonant pace and, with Adaptive Breathing, help you find the slow rhythm your body settles into. To feel the pace before installing anything, the free Breathing Pace Finder lets you dial in 5.5 in / 5.5 out in your browser.

Sources

  1. The Impact of Resonance Frequency Breathing on Measures of Heart Rate Variability, Blood Pressure, and Mood - Steffen PR, et al., Frontiers in Public Health (2017). doi:10.3389/fpubh.2017.00222
  2. Heart rate variability biofeedback: how and why it works? - Lehrer PM, Gevirtz R, Frontiers in Psychology (2014). doi:10.3389/fpsyg.2014.00756
  3. How Breath-Control Can Change Your Life: A Systematic Review of Psycho-Physiological Correlates of Slow Breathing - Zaccaro A, et al., Frontiers in Human Neuroscience (2018). doi:10.3389/fnhum.2018.00353

This is general wellbeing information compiled by our editorial team, not medical advice.

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