Let's talk about one of the most confusing terms you’ll see on your fitness tracker—specifically your Apple Watch. Next to REM sleep, which you’ve probably heard of, and “deep” sleep, which feels self ...

Edit sleep settings from Apple Watch Sleep app or in the Sleep section of the Health app on iPhone. Apple Watch sleep tracking works closely with the Health and Watch apps on your iPhone. Learn how to ...

The graphic shows an Apple Watch displaying the number "84" surrounded by three colored bars that match some of the sleep stage colors already used by the device — orange for time awake, light blue ...

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 ...

The Apple Watch may soon display a comprehensive score based on your sleep. The purported feature, which could be a basic sleep score or a readiness score, is already available on a host of Wear OS ...

If you use a sleep tracker at night, these are the three metrics you should be paying attention to in the morning.

Over the years, Apple has developed a habit of observing what works in other smartwatches and fitness trackers, and then introducing similar features to the Apple Watch later. But, because it’s Apple, ...

Apple has started rolling out watchOS 26.2, a new Apple Watch update. Though the latest firmware doesn’t include many novel features, it introduces a noticeable change to sleep tracking. The sleep ...

The Apple Watch 11 is supposed to be able to alert users about “possible hypertension” by using data from an optical heart rate sensor “to analyze how a user’s blood vessels respond to the beats of ...

For a few years now, Apple has offered Apple Watch users a sleep track record. By setting the Sleep Focus mode on, the wearable will track your sleep data, including the sleep stages, heart rate, and ...