Two sleep doctors explain what deep sleep is, how much we need and the real number you should be looking for on your Apple Watch sleep tracker.

We all have days where we wake up after clocking the usual sleep hours, but still feel fatigued and wonder if there was something wrong during the rest hours. For such situations, the sleep tracking ...

Master Apple Watch health tracking: Learn how heart rate monitoring, sleep tracking, and vitals app work together for better wellness. Pixabay, hu_lexxi Apple Watch has transformed from a simple ...

If you use a third-party sleep tracker with your Apple Watch, you’re probably familiar with the concept of a sleep score: an index that combines signals like heart rate variation and sleep stages, to ...

A good night's sleep is a fundamental part of a healthy and productive lifestyle, so it's no surprise that many of the most popular smartwatch makers have added sleep tracking to their wrist-mounted ...

Apple might finally introduce a sleep score system to the Apple Watch, giving users a clearer way to measure sleep quality beyond REM and deep breakdowns. The feature, spotted in iOS 26 beta code as ...