Physiological sigh
The physiological sigh is the quickest stress-reliever in this collection. You take a normal inhale through the nose, then a second short sip of air on top to fully inflate the lungs, followed by a long, slow exhale. That double-inhale-then-sigh pattern is something your body already does spontaneously when it's reset; doing it deliberately just a few times can noticeably lower stress within a minute or two.
- Pattern
- 2 + 1 · 6
- Pace
- 6.7/min
- Best for
- Calm down
Also known as double inhale, cyclic sighing.
How to do it
- 1Breathe in through your nose to a comfortable fullness.
- 2Without exhaling, take a second short sip of air to top the lungs right up.
- 3Let it all out in one long, slow exhale through your mouth.
- 4Repeat one to five times — even a single sigh helps.
What it's good for
- Works in under a minute — ideal for an acute spike of stress.
- Discreet enough to do at a desk or before you speak.
- The double inhale reopens collapsed air sacs and offloads CO₂ efficiently.
The evidence. A 2023 controlled study found that five minutes a day of cyclic sighing improved mood and lowered breathing rate more than mindfulness meditation or other breathwork over the month.
Frequently asked questions
What is a physiological sigh?
- It's a double inhale (a full breath plus a short top-up sip) followed by a long exhale. It's the same pattern your body does automatically when you sob or before you fall asleep — here you do it on purpose to calm down.
How many physiological sighs do I need?
- Often one to three is enough to feel a shift in the moment. For a daily practice, around five minutes has the best evidence behind it.
Gear we recommend
Optional kit that pairs with a breathing practice — for tracking recovery or training the breath itself. We may earn a commission on purchases made through these links.
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Disclaimer. Breathing exercises are generally safe for healthy adults but are not medical advice. Stop if you feel dizzy or lightheaded, and never do breath-holds in or near water or while driving. If you have a heart, lung, blood-pressure or anxiety condition, or you're pregnant, check with a clinician first. FitHQ may earn a commission on purchases made through links on this page.