After last year’s revamp, Fitbit has been slowly updating more and more of the mobile app, with Heart Rate stats being the latest redesign. There’s no change to the card in the Today tab, but the page ...

Fitbit is working with Quest Diagnostics to see whether metrics like heart rate, heart rate variability, sleep cycles, and stress can be used to detect early signs of metabolic deterioration — a ...

Want to know what your best resting heart rate was over the last month, or how you've been sleeping? Now, you may be able to just ask the Fitbit app instead of manually digging into the data yourself.