Plus, doctors’ number-one pick and their take on the devices.

The Apple Watch isn't known for being the most precise sleep‑tracking wearable, but if your readings seem far off, there are ...

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.

After testing the best Android smartwatches over the course of a year, I found top picks from Samsung, Google and more.

We’ve tested trackers from Garmin, Oura and Whoop to see which deliver the most useful data – and whether any actually improve your sleep ...

From the Oura Ring to the Apple Watch to the Google Pixel — here's what the science really says about the accuracy of their health data ...

I don’t know how or when it happened, but I have become obsessed with tracking my health data. Formerly, I would toss and turn, wondering what had caused my sleepless nights, or donned a new pair of ...

Possibly the best thing you can do for your sleep is banishing your phone from the bedroom, so it may seem ironic to add a ...