Biofeedback is a therapeutic procedure that helps individuals gain control over certain physiological functions using real-time feedback. Sensors are attached to the body to measure functions such as heart rate, muscle tension, skin temperature, and brain wave activity. This information is displayed on a monitor, allowing the patient to observe their physiological responses. Through practice and guidance, patients learn to modify these responses, which can help manage conditions such as stress, anxiety, chronic pain, hypertension, and headaches. Biofeedback aims to promote relaxation, reduce symptoms, and improve overall health by teaching patients to influence their body's functions consciously.