Stress is defined as the pressure people feel in life due to their reaction to situations. The document discusses the general adaptation syndrome which describes the body's three stage response to stress - alarm reaction, resistance, and exhaustion. It then lists the various physical, psychological, and behavioral symptoms of stress. Methods for measuring and managing stress at the individual and organizational level are provided, such as exercise, social support, and ensuring clear job objectives. The conclusion emphasizes that while stress affects everyone differently, it can be managed through various coping strategies.