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

Forger takes a more favorable view toward the devices, which he says help keep the overlooked importance of sleep front of ...

Don't sleep on getting quality shuteye at night. Good sleep is essential for your health, and poor sleep has been linked to ...

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.

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 ...

Is sleep tracking actually useful in daily life, or is it just data overload distracting you from what matters? After tracking my sleep every night for a year, I have some answers. Owen Poole, a ...