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

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.

We reviewed the best Fitbits to help you meet your health goals, including models with basic tracking and smartwatch-level ...

Overall this model was very easy to use, very accurate for counting steps, and very good at measuring heart-rate accuracy. With recent version smartphones, our experts found it very easy to pair, very ...

Overall this model was typical in how easy it was to use, very accurate for counting steps, With recent version iPhones, our experts found it very easy to pair, very easy to synch, very easy to ...