the physiological sigh
Two inhales through the nose — a full breath, then a short second sip — followed by a long, slow exhale. One of the fastest ways to calm down in the moment. Press begin and follow the circle.
Lilt gently nudges you to do one small calming thing a day — a sigh like this, timed and guided — and grows a garden as you go.
Try Lilt →The physiological sigh is two inhales through the nose — a full breath, then a short second sip that reinflates the little air sacs in your lungs — followed by a long, slow exhale that offloads carbon dioxide. Popularised by Stanford neuroscience, it's one of the fastest ways to take the edge off stress in real time. Even one or two can shift how you feel.
Reach for it in a stressful moment, before something nerve-wracking, or any time you feel wound up. Free, no signup, no ads.
Want the how and why behind it? Read the physiological sigh guide →
Common questions
What is a physiological sigh?
Two inhales through the nose — a full breath, then a short second sip — followed by a long, slow exhale. It reinflates the lungs and offloads carbon dioxide, which calms you quickly.
Does it really work?
It's one of the fastest ways to take the edge off stress in real time, popularised by Stanford neuroscience. Even one or two sighs can help. It's a general wellbeing technique, not a treatment.
How many should I do?
One to three is often enough. Repeat as needed until you feel a little steadier.
Is it free?
Yes — free, no signup, works in your browser.
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A gentle note
The physiological sigh is a general wellbeing technique, not medical, therapeutic, or crisis care. If you're struggling or in danger, please reach out for real support: find a helpline →