The document discusses stress, defining it as a condition where a person responds to changes that exceed their adaptive abilities. Stress can be caused by internal or external stressors. Hans Selye proposed two models of stress adaptation: the general adaptation syndrome and local adaptation syndrome. The general adaptation syndrome describes the body's overall response to stress in three stages - alarm, resistance, and exhaustion. The local adaptation syndrome describes localized responses like wound healing. Stress can produce physiological, psychological, cognitive, and verbal-motor manifestations in the body.