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 ...

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

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.

HOUSTON – February is American Heart Month, and many people are turning to wearable tech like smartwatches and rings to keep an eye on their heart health. But how reliable are the alerts these devices ...

As a certified personal trainer, I tested 14 wearables over eight months while training, running and swimming. Here are the ...