A child cannot watch their own breathing, so give them something to watch instead. Bubbles through a wand show the out breath as it happens: too hard and it bursts, too weak and nothing comes.
Smelling a flower and then blowing it out gives each half of the breath a picture. The bubble wand is better still, because it answers back straight away and turns a slow steady exhale into a game with a visible score. Birthday candles used to be the standard image and may be worth swapping now for something else.
Qur’an and Sunnah
by the dawn that softly breathes (Quran 81:18). The dawn is described as breathing gently, which is the quality a bubble rewards and a hard blast of air destroys.
Translation: M.A.S. Abdel Haleem, The Qur'an, Oxford University Press, 2004.
What the research says
Pooling 58 randomised studies, training people to breathe slowly gave a small to moderate benefit across a wide span of emotional and physical complaints. Those trials were overwhelmingly with adults using equipment, not children with bubbles. The shared ingredient is the slow controlled exhale, and this is simply a way of getting a child to produce one. The game itself has not been tested in that way.
Lehrer P, Kaur K, Sharma A, Shah K, Huseby R, Bhavsar J, Sgobba P, Zhang Y. (2020). Heart Rate Variability Biofeedback Improves Emotional and Physical Health and Performance: A Systematic Review and Meta Analysis.. Applied psychophysiology and biofeedback doi
Strength of evidence: one line of research. A single study, or a theoretical account.
Why it works
Feedback a child can see turns an invisible instruction into something they can get better at.
This one is still a draft. It is waiting on a scholar and a clinician to read it before it is published.
Near this one
Let the in breath come however it comes, then breathe out through pursed lips as though through a straw for a count of eight, finishing with two more counts through the nose. Three ordinary breaths, then go again.
Start with a count of four in and four out, then drop the count. Once the rhythm is there your body will choose its own length: six and six, eight and eight, whatever settles you.
Part of why martial arts suit some people has little to do with the kicking. Every session opens with a plan and closes with a look back at what happened and what comes next.