How does the general adaptation syndrome explain stress response?

The general adaptation syndrome explains how the body responds to stress through three stages.

The general adaptation syndrome (GAS) model was proposed by Hans Selye in 1936 to explain how the body responds to stress. According to the model, the body goes through three stages when faced with stress: alarm reaction, resistance, and exhaustion.

The first stage, alarm reaction, is the body's immediate response to stress. The sympathetic nervous system is activated, causing the release of adrenaline and other stress hormones. This results in increased heart rate, blood pressure, and breathing rate, preparing the body for "fight or flight" response.

The second stage, resistance, occurs when the body tries to adapt to the stressor and maintain homeostasis. The body continues to release stress hormones, but at a lower level than during the alarm reaction stage. This stage can last for a prolonged period of time, depending on the severity and duration of the stressor.

The third and final stage, exhaustion, occurs when the body's resources are depleted after prolonged exposure to stress. The body can no longer maintain resistance, and physical and mental exhaustion occur. This stage can lead to illness, disease, or even death if stressors continue to be present.

Overall, the general adaptation syndrome model provides a framework for understanding how the body responds to stress and the potential consequences of prolonged exposure to stressors.