Cyclic sighing: a five-minute breath backed by a 2023 trial
Cyclic sighing means repeating the physiological sigh - a full inhale, a short second inhale on top, then a long, slow exhale - for about five minutes. In a 2023 Stanford randomized trial, five minutes a day improved mood and lowered resting breathing rate more than mindfulness meditation. It is gentle, has no breath holds, and suits almost everyone.
A single sigh is an in-the-moment reset; cyclic sighing is the same move repeated for a few minutes as a short daily practice - and it is the version with a controlled trial behind it.
The rhythm
| Phase | Seconds |
|---|---|
| Inhale | 2s |
| Inhale (top-up) | 1s |
| Exhale | 6s |
A full inhale, a short top-up inhale, then a long, unhurried exhale. Repeat gently for about five minutes.
How to do it
- Inhale through the noseA normal, comfortable breath in.
- Add a short second inhaleA small sip on top to fully but gently fill the lungs.
- Long, slow exhaleLet it out slowly through the mouth, longer than the inhale.
- Repeat for about five minutesKeep every breath relaxed; there is nothing to force.
Common uses
- A short daily practice for lower stress and steadier mood.
- Winding down in the evening.
- A longer, deliberate version of the quick physiological-sigh reset.
What the evidence suggests
In a 2023 randomized controlled trial from Stanford, five minutes of daily cyclic sighing for a month improved positive mood and lowered resting respiratory rate more than an equal dose of mindfulness meditation or other breathwork. It is encouraging evidence from one well-run study, not a cure-all.[1]
The longer, extended exhale is doing much of the work, which fits the wider slow-breathing research. [2]
Safety
A gentle, hold-free practice for most people. Keep the second inhale a small sip rather than a gasp, and let the exhale be relaxed.
Beginner version
Start with one or two minutes. Even a handful of sighs helps in the moment - see the physiological sigh for the quick, single-round version.
Cyclic sighing vs the physiological sigh
They are the same breath at different doses. The physiological sigh is one to three rounds for an immediate reset; cyclic sighing is that same double-inhale, long-exhale pattern continued for around five minutes as a short practice. The trial that made it well known tested the five-minute daily version.
How BreathMate implements it
BreathMate guides the double-inhale timing so you get the pattern right without counting, and can hold it for a full session rather than just a few rounds.
Sources
- Brief structured respiration practices enhance mood and reduce physiological arousal - Balban MY, et al., Cell Reports Medicine (2023). doi:10.1016/j.xcrm.2022.100895
- How Breath-Control Can Change Your Life: A Systematic Review of Psycho-Physiological Correlates of Slow Breathing - Zaccaro A, et al., Frontiers in Human Neuroscience (2018). doi:10.3389/fnhum.2018.00353
This is general wellbeing information compiled by our editorial team, not medical advice.