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

The Amazfit Helio Strap successfully delivers on its promise to be a compelling, subscription-free alternative to Whoop. The hardware is lightweight and comfortable, while the core tracking for heart ...

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 ...

Which sleep tracker should you buy this January? Here are some of our favorites, in various forms, from smartwatches to rings. When you purchase through links on our site, we may earn an affiliate ...

Motorola’s new Moto Watch is the first with Polar tracking, bringing sleep and recovery scores, continuous heart rate, ...