These are the prices on fitness trackers I'm seeing in Black Friday sales. Garmin, Fitbit, Apple, Pixel, and more make the list.

Milliseconds of variability, now detected by fitness watches, can improve well-being Earlier this year I got an Oura ring to ...

So when I began testing the Polar Loop —a new screen-free wearable health and fitness band—I wasn’t all that excited. After ...