A sleep test, also known as a polysomnography, is a diagnostic procedure used to evaluate sleep disorders, such as sleep apnea, insomnia, and restless leg syndrome. During the test, various sensors are attached to the body to monitor brain activity, eye movement, heart rate, breathing patterns, and muscle activity while the patient sleeps. The data collected helps healthcare providers diagnose sleep-related issues and determine the most effective treatment options. Sleep tests are often conducted in sleep centers or at home using portable monitoring devices to ensure accurate results and improve sleep quality.