Sleep trackers use your resting heart rate, heart rate variability and breathing data to estimate how long you sleep and how much time you spend in each stage.

Fitbit has unveiled the third device in the Fitbit Charge family, the Fitbit Charge 3, and the new version adds SpO2 tracking among other health tracking improvements. The device will be available ...

We reviewed the best Fitbits to help you meet your health goals, including models with basic tracking and smartwatch-level ...

This article is part of Gizmodo Deals, produced separately from the editorial team. We may earn a commission when you buy through links on the site. Reading time 3 minutes Not everyone can afford to ...

Platform integrates with major wearables and fitness apps to deliver AI-powered health insights, advanced HRV metrics, ...

If you’re looking for a simple and reliable fitness tracker, the Fitbit Charge 6 is back down to its lowest-ever price in a limited-time Amazon deal. You can currently get the tracker for just $99.95, ...

ATLANTA — Your watch says you had three hours of deep sleep. Should you believe it? Millions of people rely on phone apps and wearable devices like rings, smartwatches and sensors to monitor how well ...