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Pupil dilation occurs to allow you to see farther distances and secure yourself from threats. Signs and symptoms of the alarm reaction stageĭuring the alarm reaction stage, cortisol levels will increase as well as heart rate and blood pressure.Īll of these bodily reactions prepare you to handle danger.Ĭardiac output increases to flow blood to your muscles to prepare you to fight and increase your strength.īlood pressure increases due to vasoconstriction, directing blood away from the gastrointestinal system (running away from danger is not a safe time to poop), and this vasoconstriction also makes you less likely to bleed out if you were to be injured.īronchodilation facilitates breathing to prepare you to run. The fight or flight response is the way our bodies react to danger, whether real or imagined, and the body prepares to release hormones like adrenaline and cortisol, and modifies organ function to best serve you to take flight (run away) from danger, or to fight. The first stage of general adaptation syndrome is the alarm reaction stage, during which the body has a fight-or-flight response to a stressor. General adaptation syndrome is a framework for understanding the body's response to a stressor, and it contains three stages: alarm reaction, resistance, and exhaustion. One framework used to describe how the body reacts to stress is called general adaptation syndrome. Stress is the body’s physical and emotional reaction to physical, mental, or emotional pressure.