1Once the surge is up it takes something like a quarter of an hour to drop, and nothing sensible said inside that window will land. Give it the time first.
This is the point where a parent, a partner or a friend reaches for reasons, and the reasons make it worse. Keep your words few, stay nearby, offer water or a walk outside, and save the conversation for later. It is not a trick to buy quiet. The body genuinely cannot take in an argument until the chemistry has cleared.
Islamic evidence
truly it is in the remembrance of God that hearts find peace (Quran 13:28). Something short and steady, said or heard, does more inside that window than any explanation will.
“those who have faith and whose hearts find peace in the remembrance of God- truly it is in the remembrance of God that hearts find peace”
Qur'an 13:28
Psychological evidence
An observational study that followed people through ordinary days found that daily worry and stressors went with a faster heart rate and lower heart rate variability, not only while awake but into the night's sleep that followed. The body's arousal outlasts the moment that caused it by a long way. Being observational, it shows the pattern rather than proving what causes what.
Brosschot JF, Van Dijk E, Thayer JF. (2007). International journal of psychophysiology : official journal of the International Organization of Psychophysiology · doi
Review detail
Why it works. The stress chemistry takes its own time to clear and words cannot hurry it.