Stress hormones are chemicals released by the body in response to stress. The primary stress hormones are cortisol, adrenaline, and norepinephrine. These hormones prepare the body to respond to perceived threats by increasing heart rate, blood pressure, and energy supplies. This response is often referred to as the "fight or flight" reaction. When stress is chronic, elevated levels of these hormones can lead to various health issues, including anxiety, depression, and heart disease. Managing stress through techniques like exercise, meditation, and proper nutrition can help regulate hormone levels and improve overall well-being.