Why your smartwatch thinks you slept badly even when you feel fine ...

Millions of people rely on wearable devices to monitor how well they're sleeping. Sleep trackers don’t necessarily measure sleep directly but instead infer states of slumber from signals like heart ...

Like many Americans, I know I need more sleep. I'm a night owl, often writing late into the night, but also a mom who gets up early with her kids. The result: I'm not getting enough rest.

To see your sleep data, open the Health app on your iPhone and tap Browse, then Sleep. At the top of the screen, you will see ...

Apple added a new Sleep Score feature that gives you a single number to sum up how you slept. It pulls data from your Apple Watch and turns it into an easy rating you can check first thing in the ...

For a while now, I’ve worn two devices when I go to sleep—an Apple Watch Series 7 on my left wrist, and a WHOOP 5 MG on my right wrist. Every morning, I get three different scores purporting to tell ...

One of my favorite Apple Watch features introduced this year is Sleep Score. Sleep is a crucial part of life, and this feature gives you a look at three different facets of it: duration, bedtime, and ...

The watchOS 26.2 update arrives with a tighter sleep-scoring system and a required Wi-Fi change for users in the European Union. Apple adjusted the sleep score ranges in watchOS 26.2 to better match ...

Get tracking, temperature regulation, and other smart features without the hassle or investment of a smart bed.