This document discusses stress, its causes, effects, and management. It defines stress as the reaction people have when excessive pressures exceed their ability to cope. Stress can come from external sources like one's environment, social interactions, work, or life events, as well as internal sources like lifestyle, thoughts, and personality traits. Both negative and positive stress are covered, with negative stress linked to minor health issues and positive stress spurring motivation. The endocrine system response to stress and its alarm, adaptation, and exhaustion phases are outlined. Symptoms of stress are described across physical, mental, emotional, and behavioral domains. The document closes by linking prolonged stress to serious illnesses.