Cyclic sighing: five minutes to shift your mood
If you have five minutes and want to feel different, make your exhale longer than your inhale. The technique is called cyclic sighing: two inhales through the nose, then one long, slow exhale through the mouth, repeated for five minutes. In a randomised trial published in Cell Reports Medicine, five minutes a day of this improved mood and slowed breathing rate.
What is cyclic sighing?
It is a deliberate version of something your body already does. You sigh several times an hour without noticing: an inhale that breaks into two, followed by a long exhale. Cyclic sighing takes that gesture and repeats it on purpose for a few minutes.
That makes it easy to learn. No posture, no complicated counting, nothing to memorise. If you have ever let out a long breath after a fright, you have already done it.
How to do it, step by step
- Sit or lie down, however you are comfortable. You do not need to close your eyes.
- Inhale through your nose, without straining, to about half your capacity.
- Without letting the air out, take a second short inhale through your nose to top up your lungs.
- Exhale slowly through your mouth, letting the air out completely. The exhale should last noticeably longer than both inhales combined.
- Repeat for five minutes.
The ratio matters more than exact seconds: long exhale, short inhale. If you run out of air or feel light-headed, you are pushing too hard. Cyclic sighing is meant to be gentle.
What did the study find?
The trial tested three different breathing techniques, five minutes a day for a month, in a randomised controlled design. It measured mood, anxiety and physiological arousal: breathing rate, heart rate and heart rate variability.
The one that worked best was the exhale-focused technique — cyclic sighing — with statistically significant improvement in mood and reduction in breathing rate. The authors' own conclusion is that five minutes of daily cyclic sighing shows promise as a stress management exercise.
Five minutes a day, no equipment, nothing complicated to learn: it is one of the cheapest interventions anyone has studied.
Why the exhale and not the inhale?
The usual explanation is that a long exhale favours the branch of the nervous system that slows things down, while inhaling pulls towards the one that speeds them up. That is why the sigh — a long exhale after filling the lungs — shows up on its own when your body needs to drop a gear.
Doing it deliberately gives your body that nudge instead of waiting for it.
How long until you notice?
There are two timescales, and both are good news.
In the moment, most people notice something by the third or fourth round: the breath slows on its own and the body loosens. It is one of the few things with an immediate effect that you can do anywhere, without anyone noticing.
The other timescale is the study's, which measured a month of daily practice. That is where the effect builds. According to Meditar, this is the part most often lost in the retelling: five minutes today is good, and five minutes every day is something else.
What if it feels hard at first?
It is almost always the same thing: inhaling too forcefully, leaving no air for a long exhale. Turn both inhales down before giving up. Cyclic sighing works gently; straining works against it.
It also helps not to count. Tracking seconds in your head keeps awake exactly the part you are trying to let go of — which is why it works better guided, with a voice keeping the rhythm so all you do is breathe.
One note that matters: if anxiety is with you most days and affecting your life, talk to a professional. A breathing exercise adds to that; it does not replace it.
Five minutes, with someone guiding you
Meditar is a guided meditation app where you pick the voice that guides you: you listen before choosing and keep the one that feels right. It is not out yet. If you want us to tell you when it launches, leave your email on the home page.
If you are curious about what regular practice does over a longer horizon, here is what the evidence says about meditation apps.