Areas › Your body › Your nervous system
The steadiness you are training shows up in more than your mood. Sleep, digestion and how quickly you come down after a fright tend to move together.
Worth knowing when progress on the thing you came for feels slow. People often notice they are sleeping better, or snapping less, before they notice any change in the symptom they were counting. Those are not consolation prizes. They are the same system improving in a place you were not watching.
Qur’an and Sunnah
'He breathed from His Spirit into him; He gave you hearing, sight, and minds' (Quran 32:9). Body and spirit are held in one sentence, which is roughly what this is describing.
ثُمَّ سَوَّىٰهُ وَنَفَخَ فِيهِ مِن رُّوحِهِۦۖ وَجَعَلَ لَكُمُ ٱلسَّمۡعَ وَٱلۡأَبۡصَٰرَ وَٱلۡأَفۡـِٔدَةَۚ قَلِيلࣰ ا مَّا تَشۡكُرُونَ
Then He moulded him; He breathed from His Spirit into him; He gave you hearing, sight, and minds. How seldom you are grateful
Qur’an 32:9read it in the library
Translation: M.A.S. Abdel Haleem, The Qur'an, Oxford University Press, 2004.
What the research says
A review and meta-analysis found depression associated with reduced heart rate variability even in people without heart disease, linking mood to autonomic regulation directly. A larger systematic review found reduced variability across psychiatric conditions generally, but also showed that psychotropic medication accounts for part of the difference, which is a caution against reading it as a clean marker of illness. The link is real and the interpretation is contested.
Kemp AH, Quintana DS, Gray MA, Felmingham KL, Brown K, Gatt JM. (2010). Impact of depression and antidepressant treatment on heart rate variability: a review and meta-analysis.. Biological psychiatry doi
Alvares GA, Quintana DS, Hickie IB, Guastella AJ. (2016). Autonomic nervous system dysfunction in psychiatric disorders and the impact of psychotropic medications: a systematic review and meta-analysis.. Journal of psychiatry & neuroscience : JPN doi
Strength of evidence: one line of research. A single study, or a theoretical account.
Why it works
One regulating system sits underneath mood, sleep, digestion and recovery, so it improves in several places at once.
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
The calm and connected part of this system speaks through your face, your voice, your ears and your heart. That is why those are the places to work.
You will stop doing this once you feel better. Write it on your list of things that help, so it is there next time instead of forgotten.
Safety comes in through three doors: your body, the place you are in, and the people around you. If one is shut, try another.