The document discusses stress, including its definition, causes, models, effects, and management. It defines stress as the body's non-specific response to any demand, and identifies stressors as internal or external stimuli that cause stress. Three models of stress are described: stimulus-response, response-based, and transaction-based. The general adaptation syndrome and local adaptation syndrome are discussed as the body's response patterns to stress. Physical, emotional, intellectual, social, and spiritual effects of stress are outlined. Stress management techniques include reducing stressors, relaxation, exercise, biofeedback, and coping strategies.