Shora
Techniques / Breathing

Box Breathing.

Moderate evidence 3–16 min · also called square or tactical breathing

Box breathing is the simplest structured breath there is: inhale, hold, exhale, hold — each for the same four counts, tracing the four sides of a square. Navy SEALs use it before high-stakes operations; ER nurses use it between patients; you can use it in a parked car before a hard conversation.

The long, even rhythm slows the heart and signals safety through the vagus nerve, while counting gives a racing mind exactly one job. Within a few rounds, most people feel the static settle.

In Shora, box breathing shows up when your check-in reads wired and scattered — high stress with thoughts that won’t line up. The app paces the counts for you, so there’s nothing to track but the breath.

Breathe with the square

Try it right now.

1 Inhale through the nose — 4 counts
2 Hold, lungs full — 4 counts
3 Exhale through the mouth — 4 counts
4 Hold, lungs empty — 4 counts

Repeat for four rounds — about a minute and a half.

What the research says.

Moderate evidence
How Breath-Control Can Change Your Life: A Systematic Review on Psycho-Physiological Correlates of Slow Breathing
Slow breathing techniques including box breathing enhance parasympathetic activity and improve emotional regulation. University of Pisa, Frontiers in Human Neuroscience 2018
A note on safety. Breath holds can feel edgy if you're prone to panic, pregnant, or have a heart or lung condition — skip the holds and breathe in for four, out for four instead. Shora is a wellness practice, not a substitute for professional care.
Best for Acute stressPre-performance nervesRacing thoughtsAnger cool-down