The physiological sigh: calm in under a minute.
1 min, guided, free
In short
The physiological sigh is a breathing pattern of two inhales through the nose, a long one and a short top-up, followed by one slow exhale through the mouth. One to three sighs are often enough to feel calmer. It is the quickest calming breath on ifeelfive and works almost anywhere.
How to do it
- Breathe in through your nose.
- At the top, take one more short sip of air through the nose.
- Let it all out slowly through your mouth, longer than you breathed in.
Your body already does this on its own: it is the sigh you let out after crying or a long day. The long exhale is the part that tells your nervous system it can stand down.
When it helps
- Right before a hard conversation or a presentation
- When stress spikes and your chest feels tight
- After bad news, to land again
- In a meeting, quietly, nobody will notice
How often: Any time. Even in a meeting, nobody will notice.
Why it works
Two short inhales open up the tiny air sacs in your lungs a little more, and the long exhale slows your heart rate down a touch. One to three sighs is often enough. It is the fastest reset on this page.
A small Stanford study compared five minutes a day of different breathing practices and found that this cyclic sighing improved mood and lowered breathing rate the most (Balban et al., Cell Reports Medicine, 2023).
Questions
How many physiological sighs should I do?
One to three sighs often help in the moment. For a longer reset, people practise it for about five minutes.
Do I breathe out through the mouth or the nose?
Usually both inhales through the nose and the long exhale through the mouth. Through the nose works too, the long exhale is what matters most.
Is the physiological sigh the same as cyclic sighing?
Yes. Cyclic sighing just means repeating the physiological sigh calmly for a few minutes.
Related breaths
Notes with this breath
Be kind to yourself
A simple breathing exercise, not treatment. Breathe gently and stop if you feel dizzy, tingly or unwell. Never while driving or in water. If you are pregnant or live with a heart, lung or blood pressure condition, epilepsy or panic attacks, talk to your doctor before trying fast or held breaths. All breathing exercises