Stress is the body's reaction to events that require focus and heightened alertness. It affects the nervous system and hormones, increasing heart rate, breathing, blood pressure, and metabolism. Many things can cause stress, like exams, relationships, illness, or expectations. Stress can impact emotions, thinking, physical health, and behaviors. While complete removal of stress is impossible, managing it through relaxation techniques, exercise, social support, and reducing stressors can help cope with life's pressures.