This document discusses the effects of stress on the human body. It explains that stress affects our thoughts, feelings, bodies, behavior and interactions. When stressed, our blood pressure rises, breathing becomes more rapid, digestive system slows down, heart rate increases, immune system decreases, and muscles become tense. Prolonged stress can impair memory and lead to chronic health issues if stress hormones like cortisol remain elevated. Stress negatively impacts the nervous, endocrine, cardiovascular, immune, digestive, and reproductive systems. It can cause cognitive, emotional and behavioral issues. Chronic stress is associated with diseases like heart disease, anxiety, depression and more. The document outlines common stress-related disorders and diseases.