How accurate is your smartwatch? Learn how Apple and Samsung smartwatches use motion and HR to track sleep, and why you ...

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 ...

Smartwatch makers promise to turn your wrist into a sleep lab, translating tiny movements and heart rate blips into colorful ...

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 ...

Feeling groggy in the morning? Wondering if you're getting enough shut-eye? Your Apple Watch might have the answers you're looking for. With the built-in sleep app, you can easily track your sleep ...

We present 20 strategies for getting eight hours of blissful shut-eye every night. According to a 2024 study, an irregular ...

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 ...

Tech companies that once competed to keep you awake and scrolling are now fighting to optimize your sleep and track your dreams. The same Silicon Valley giants that created addictive apps and endless ...

When it was first released in 2015, the Apple Watch quickly earned the mantle of the best-selling device in the category, and millions of users have it on their wrists today. Its seamless pairing with ...

Last night, my official Sleep Score was 95. It was 87 the previous night. I’ve even earned an achievement for ‘excellent’ sleep this week via Samsung’s handy Health app. And because I’m a gamer, the ...