When to trust sleep tracker data, when to see a doctor

As daylight saving time shifts, sleep trackers gain popularity for their affordability and potential health benefits. Dr. Samuel Gurevich from the Cleveland Clinic explains that while basic trackers use accelerometers to estimate sleep duration through movement, more advanced ones attempt to gauge sleep quality using oxygen levels and heart rate, though not reliably. He suggests maintaining a sleep diary for insights into sleep habits and warns that persistent tiredness, heavy snoring, or breathing issues during sleep warrant a professional sleep study for accurate assessment.