NanoTimer
App Store

Coherent breathing timer

Coherent breathing, also called resonant breathing, is slow equal breaths at around six a minute: in for five, out for five, no holds. The circle sets the pace so you can just follow it.

  1. Breathe in 5s
  2. Breathe out 5s

Take it with you in the app

This tool runs in your browser. Want it on your phone, with voice cues, background timing and a real alarm? Open the same tool in NanoTimer.

Open on your phoneOpens the right tab in NanoTimer on your iPhone.
Download on theApp StoreLink coming soon

How it works

  1. Breathe in through your nose as the circle grows, out as it shrinks. Five seconds each is the usual starting point.
  2. No holding, no forcing. The whole idea is a smooth, even rhythm.
  3. Use the seconds control to find your own resonance: many people settle between five and six seconds a side.
  4. Five to ten minutes is a normal session. Sit comfortably and let the breath stay gentle.

Frequently asked questions

What is resonance breathing?
Coherent and resonant breathing are the same idea: breathing slowly and evenly at roughly six breaths a minute. Slow breathing with an even rhythm is linked to a shift toward the parasympathetic, or rest, side of the nervous system, and higher heart-rate variability. Your exact resonant rate is individual, which is why the seconds are adjustable.
How is this different from box breathing?
Box breathing holds the breath between phases; coherent breathing does not. It is just a smooth in and out at an equal count. Many people find it easier to sustain for longer because there is nothing to hold.
Can I do this in the app?
Yes. The NanoTimer app has a dedicated Breathe section: guided, adjustable breathing patterns, free.

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