Stress begins with something called the hypothalamus pituitary adrenal axis, a series of interactions between endocrine glands in the brain and on the kidney, which controls  your body's reaction to stress.
Stres započinje takozvanom osovinom hipotalamus - hipofiza - nadbubrežna žlijezda (HPA), nizom interakcija između endokrinih žlijezda u mozgu i žlijezda na bubregu. koje određuju kako će organizam reagirati na stres.