The science
Everything in Ten Breaths traces back to a published study. This page lists them, and explains the choices I made because of them.
Why box breathing is the default
The famous result in this space is the 2023 Stanford trial (Balban et al.), which found that five minutes a day of cyclic sighing improved mood more than mindfulness meditation over a month. It's a good study. It's also about daily practice and mood, not about the four minutes before an interview.
The closest study to what Ten Breaths does was published in 2026: 47 people did one minute of either cyclic sighing or box breathing in real-life stressful moments, on their phones. Both cut anxiety with a large effect, and there was no difference between them. But participants rated box breathing significantly easier and less annoying, and were more likely to use it again. Under stress, equal counts win: there is nothing to think about.
So the default is box breathing. Slow 5-5 breathing is there for people who dislike breath holds. Cyclic sighing is there too, for its mood benefit, but it is not what I hand you when you're rattled.
Why the app says what it says at the end
When a session ends, the circle shows one short line. None of them are affirmations in the motivational-poster sense. Each comes from a specific effect:
- Reappraisal. Telling yourself that a racing heart is your body getting ready, rather than falling apart, improves both performance and cardiovascular response (Jamieson et al. 2012). Saying "I am excited" beat saying "I am calm" before public speaking (Brooks 2014). A 2024 meta-analysis of 44 effect sizes confirms a small, real effect on performance.
- Distanced self-talk. Addressing yourself by name or as "you" reduces anxiety and rumination before a stressful task (Kross et al. 2014; replicated with EEG and fMRI by Moser et al. 2017). That's why the app may use your first name. It reads it from your Mac's account, locally, and never sends it anywhere.
Sources
- Balban et al. (2023). Brief structured respiration practices enhance mood and reduce physiological arousal. Cell Reports Medicine.Cyclic sighing vs box breathing vs meditation, 5 min daily for a month.
- Simply breathing anxiety away? A pilot just-in-time study of one-minute cyclic sighing versus box breathing (2026). Anxiety, Stress, & Coping.One minute, real-life stress. Why box breathing is the default.
- Fincham et al. (2023). Effect of breathwork on stress and mental health: a meta-analysis of randomised-controlled trials. Scientific Reports.12 trials, 785 adults. Small-to-medium effect on stress.
- Brooks (2014). Get excited: reappraising pre-performance anxiety as excitement.Journal of Experimental Psychology: General."I am excited" beats "I am calm" before performing.
- Jamieson, Nock & Mendes (2012). Mind over matter: reappraising arousal improves cardiovascular and cognitive responses to stress. Journal of Experimental Psychology: General.A racing heart, reframed as help.
- Effectiveness of stress arousal reappraisal and stress-is-enhancing mindset interventions on task performance: a meta-analysis (2024). Scientific Reports.44 effect sizes; d = 0.23 on performance.
- Kross et al. (2014). Self-talk as a regulatory mechanism: how you do it matters.Journal of Personality and Social Psychology.Seven studies, N = 585. Why the app may use your name.
- Moser et al. (2017). Third-person self-talk facilitates emotion regulation without engaging cognitive control. Scientific Reports.ERP and fMRI replication of distanced self-talk.
Why a dragonfly
A dragonfly holds perfectly still in the air by beating its wings thirty times a second. It looks calm; it is working. That's the honest picture of a composed person before a big meeting, and it's what ten breaths buy you: not the absence of nerves, but nerves held steady. In Japan the dragonfly is kachimushi, the victory insect, because it only flies forward. Also, it has four wings and six legs.
A note on honesty
The effects here are real but modest. Breathing for two minutes will not fix a bad night's sleep or an unprepared presentation. It will get you into the room in better shape than you walked up to it. That's the whole promise.