The Fitbit One looks a lot like the Ultra – just a slimmed down version of its predecessor. Available in black or burgundy, the device comes with a silicon clip so you can attach it onto your clothes ...

The Editors' Choice award-winning Fitbit Ultra is one of the best fitness-tracking gadgets available in an increasingly crowded market, but rather than resting on its laurels and letting its ...

Your Fitbit app is transforming into Google Health, with some big changes to data management and personal training. Google Health will be able to incorporate health data across disparate sources, even ...

Google's new Fitbit Air is drawing criticism from early adopters, with users reporting strange tracking behavior.

Whoop vs. Fitbit Air: I used both to track my health and fitness for a month - this one's better ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Add as a preferred ...