Phase 1: alarm reaction mobilize (stressor occurs)
phase 2: resistance (cope with stressor)
phase 3: exhaustion (reserves depleted)
this is called GAS
n Phase 1, you have an alarm reaction, as your sympathetic nervous system is suddenly acti- vated. Your heart rate zooms. Blood is diverted to your skeletal muscles.You feel the faintness of shock.
During Phase 2, resistance, your temperature, blood pressure, and respiration remain high.Your adrenal glands pump hormones into your bloodstream.You are fully engaged, summoning all your resources to meet the challenge.
Phase 3, exhaustion.With exhaustion, you become more vulnerable to illness or even, in extreme cases, collapse and death.