english: The reason for this has to do with the hypothalamic–pituitary–adrenal axis, the brain's and body's stress response system that governs our fight-or-flight response.
non_english: De reden hiervoor is de hypothalamus-hypofyse-bijnieras, het stressresponssysteem van ons lichaam en de hersenen dat de vecht- of vluchtreactie regelt.