Any breathing instruction that reaches you through a screen or a book comes from someone who cannot see you. Keep the final say over what your body does.
Recorded instructions have to be general. You are the one who knows that your chest tightens on holds, or that counting makes you anxious. Treat each instruction as an offer: try it, adapt it, put it down. If you are the one teaching at a distance, say this out loud, because many people will push through discomfort simply because they were told to.
Qur’an and Sunnah
I will feel stressed and tongue-tied, so send Aaron too (Quran 26:13). Moses named his own limit plainly and asked for what he needed, and nothing in the response treated that as weakness.
وَيَضِيقُ صَدۡرِي وَلَا يَنطَلِقُ لِسَانِي فَأَرۡسِلۡ إِلَىٰ هَٰرُونَ
and I will feel stressed and tongue-tied, so send Aaron too
Qur’an 26:13read it in the library
Translation: M.A.S. Abdel Haleem, The Qur'an, Oxford University Press, 2004.
What the research says
Across 29 studies of slow breathing with heart rate feedback in adults living with chronic illness, the practice proved workable and no adverse effects were reported, with positive findings for blood pressure and other cardiovascular measures. Worth noticing how those studies ran: people were screened, taught and supervised. Practising on your own, that screening job falls to you.
Fournié C, Chouchou F, Dalleau G, Caderby T, Cabrera Q, Verkindt C. (2021). Heart rate variability biofeedback in chronic disease management: A systematic review.. Complementary therapies in medicine doi
Strength of evidence: one line of research. A single study, or a theoretical account.
Why it works
Following an instruction past your own discomfort trains you to ignore your body, which is the opposite of the point.
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
Go slowly enough to learn something about yourself, rather than only a technique. What is worth keeping is knowing which breath does what in your body.
End a practice with a question rather than a conclusion. What do you notice works better than telling someone what should have happened.
To find the soft ocean sounding breath, breathe out through your mouth as if fogging up a mirror. Then keep that same slight narrowing at the throat with your mouth closed, and let the sound get quieter and quieter.