Sleep study, or polysomnography, is a diagnostic procedure used to evaluate sleep patterns and detect disorders such as sleep apnea, snoring, or insomnia. During the study, sensors are placed on the body to monitor brain activity, breathing, heart rate, oxygen levels, and muscle movements while you sleep. The test is conducted overnight in a comfortable sleep lab setting. It is safe, non-invasive, and provides detailed insights that help doctors recommend effective treatments for better sleep.