Stress is a normal physical and emotional response to events that threaten one's well-being or upset one's balance. Stress triggers the body's fight-or-flight response, increasing heart rate, blood pressure, and other physical changes to prepare the body to respond to danger. However, prolonged stress can negatively impact physical and mental health. The document discusses the causes and consequences of stress and provides tips for managing stress at work, including time management, prioritizing tasks, and recognizing signs of excessive stress. It emphasizes that stress is not inherently bad but that constant high stress can harm one's mind and body.