Breathe

What it does

A circle that grows as you breathe in, rests while you hold, and shrinks as you breathe out. Pick a pattern, tap the circle, and follow it. A shaded wedge sweeps around the circle through each phase, so you can see how long is left.

• Eight patterns. Box, 4-7-8, Coherent (about six slow breaths a minute), the physiological Sigh, Triangle, Long exhale, Equal, and three rounds of the Wim Hof method with a hold as long as you like.
• A note under each one: what the technique is, what people who practice it report, and where it comes from. The evidence varies, and the page says so.
• An optional timer adds a ring and counts down the seconds of each phase inside the circle.
• Tap anywhere, or press Space, to start and stop. It remembers the last pattern you used.
• Screen readers hear each phase as it changes.