Upon perception of a stimulus as stressful. the human brain reacts with the activation of the hypothalamus-pituitary-adrenal (HPA) axis and the sympathetic nervous system (SNS). to mobilize energy resources to better cope with the stressor. Since the perception of the stressor is the initial stimulus. https://www.pomyslnaszycie.com/life-is-better-with-my-boys-womens-graphic-tee-ice-blue-online-now/