What is heart coherence?
Your heart doesn't beat like a metronome: the interval between two beats is constantly changing, and this variability (HRV) is a great indicator of your stress levels. When you're tense, the rhythm stiffens. Heart coherence means breathing at a precise frequency — 6 breaths per minute — that brings your HRV back into a smooth, deep rhythm.
In practice, this slow breathing stimulates the vagus nerve and shifts your nervous system into parasympathetic mode: your heart rate slows down, your muscles relax, and cortisol drops. It's a physiological off-switch for stress — not just relaxation 'in your head'.
The 365 method, in three numbers
- 3 times a day — upon waking, at noon, in the evening
- 6 breaths per minute — 5 seconds in, 5 seconds out
- 5 minutes per session — enough time to trigger the physiological shift
The tool above is set to a 5s/5s rhythm. Inhale through your nose as the circle expands, exhale gently (nose or mouth, whatever feels natural) as it shrinks. If 5 seconds feels too long at first, start with 4s/6s — consistency matters, not perfection.
When should you use it?
- Acute stress : before a meeting, an interview, a tough conversation — 3 minutes are enough to take the edge off
- Evening overthinking : when your thoughts race at bedtime, coherence acts as a decompression chamber (we talk about this in our article on overthinking)
- Sleep : practiced in bed in the dark, it helps you fall asleep faster
- Chronic baseline stress : 3 sessions a day for several weeks boost your baseline heart rate variability — this is its most powerful use
How long until you feel the effects?
Relief is immediate: after 5 minutes, most people feel the tension release. For lasting benefits on background stress, sleep, or blood pressure, count on 2 to 4 weeks of daily practice — just like a muscle, it takes training. Consistency beats duration: 3×5 minutes a day is much better than one long occasional session.
Our detailed article: heart coherence: the 365 method explained.
Want to take it further?
In the Loane app, coherence is guided with sound and haptics, and is part of a tailored action plan against your stress — with an AI coach who knows you and tracks your progress. 7-day free trial on iPhone.