Find out how to use the data for better, more restful shuteye, according to Men’s Health.

Sleep tracking is everywhere, mostly because many fitness trackers now offer some form of sleep data alongside activity levels, food logs, and heart rate.

It’s a logical step, since scientists have learned that sleep plays a huge role in nearly every aspect of our wellbeing. Numerous studies have associated better sleep with lower heart risks, better athletic performance, even higher libido, among other benefits. So there’s no argument that sleep is important. But, are those fitness trackers really telling you the full story when it comes to your shuteye?