The upcoming Fitbit Air has some features that should make smartwatches and Whoop sweat. You'll find Apple Watches and Whoop fitness trackers on a number of Mashable writers and editors' wrists.
The upcoming Fitbit Air has some features that should make smartwatches and Whoop sweat. You'll find Apple Watches and Whoop fitness trackers on a number of Mashable writers and editors' wrists.