Physiological sigh: how to do the double-inhale breath

Sometimes there is no time for a five-minute exercise. Your chest feels tight before a call, a message just landed badly, or worry has quietly sped up your breathing. In those moments, one breath may be all you have room for.

The physiological sigh is that one breath: two inhales, then one long exhale. It is quick, quiet and easy to do without anyone noticing.

What the physiological sigh is

The physiological sigh, sometimes called the double-inhale breath or cyclic sighing when it is repeated, is a short breathing pattern with three parts. You breathe in, add a small extra sip of air on top, then let it all go in a long, unhurried exhale.

It feels a lot like a natural sigh, done on purpose and slowly. Because it is a single breath, you can use it almost anywhere: at your desk, in a queue, in the car before you walk in.

How to do the physiological sigh

1. Breathe in through your nose. An easy breath, about two seconds, not all the way to the top.
2. Add a small second inhale. Without breathing out, take one short sip of air on top of the first.
3. Let a long exhale go. Slowly, through your nose or mouth, until the breath feels finished. No need to push.
4. Rest for a moment. Breathe normally for a breath or two.
5. Repeat if you like. One round is plenty. You can also keep going for a minute.

Meditly’s guidance sums it up: the small second inhale is just a sip on top of the first. Then let the long exhale go slowly, through your nose or mouth. One round is fine, or keep going.

When the physiological sigh fits

Its size is its strength. It suits moments that are too short or too public for a longer exercise:

• just before a call, a meeting or a difficult conversation;
• right after reading a message that tensed you up;
• when you notice your shoulders creeping up toward your ears;
• in bed, when a worry pulls you back awake. Our guide to anxiety before bed has more ideas for that moment.

If you have a few more minutes, a steady pattern such as box breathing can follow a sigh nicely.

Common mistakes and gentle cautions

• Making the inhales huge. The first breath is easy, not maximal, and the second is a small top-up. Forcing big gulps of air can leave you light-headed.
• Rushing the exhale. The long breath out is the main part. Let it take its time, without blowing hard.
• Doing many rounds back to back. A few in a row are fine. If you want to keep going, leave a normal breath in between.
• Expecting a switch. It is a pause, not an off button. Strong feelings may still be there afterwards, and that is okay.
• Pushing through discomfort. If you feel dizzy, tingly or light-headed, stop and breathe normally.

How to try the physiological sigh in Meditly

Open the Meditate tab, choose Breathe, then Physiological sigh, and tap Begin. The session is one minute by default. The circle guides each part, Breathe in, A little more and Long exhale, so you can simply follow along. Turn on Haptics if you’d like to feel the rhythm with your eyes closed.

When to get extra support

A breathing exercise is a small, everyday tool. If anxiety shows up most days, makes it hard to work, sleep or see people, or comes with panic that frightens you, please talk to a doctor or a mental health professional. You don’t have to manage it on your own.

If chest pain or trouble breathing comes on suddenly or feels severe, call your local emergency number.

If you ever feel unsafe, or have thoughts of harming yourself, please reach out now. Call your local emergency number, or find a free line near you at findahelpline.com. In Meditly, Profile → Get support now lists numbers for your country.

Frequently asked questions