Which one is not a stage of General Adaption Syndrome (according to Selye's model)?

Stage of tolerance

The correct answer is Option (1) → Stage of tolerance

What happens to the body when stress is prolonged? Selye studied this issue by subjecting animals to a variety of stressors such as high temperature, X-rays and insulin injections, in the laboratory over a long period of time. He also observed patients with various injuries and illnesses in hospitals. Selye noticed a similar pattern of bodily response in all of them. He called this pattern the General Adaptation Syndrome (GAS). According to him, GAS involves three stages: alarm reaction, resistance, and exhaustion.

• Alarm Reaction – The initial reaction to a stressor, activating the "fight or flight" response.

• Stage of Resistance – The body adapts to the stressor and attempts to return to normal functioning.

• Stage of Exhaustion – Prolonged exposure to the stressor depletes the body’s resources, leading to reduced function or illness.