If you’re constantly tired during the day, snore heavily, or wake up feeling unrested, it might be more than just poor sleep habits. A sleep test can help identify underlying issues like sleep apnea or other sleep disorders that often go undiagnosed. Whether done at home or in a sleep lab, the test tracks your breathing, heart rate, oxygen levels, and movement while you sleep. Understanding your results can lead to targeted treatments that improve sleep quality and daily life. This guide walks through what a sleep test involves, who should consider it, and how to get started.