Your watch says you had three hours of deep sleep. Should you believe it? Millions of people rely on phone apps and wearable ...

A big deadline is looming for former Fitbit owners, who will have their historical data deleted if they don't migrate their ...

As the devices continue to gain popularity, experts say it is important to understand what they can and cannot tell you, and ...

The key benefit of wearing a health tracker is learning about your heart rate variability (HRV). This metric helps users to ...

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Dipa Kamdar does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

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 ...