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.

If you’re struggling with your sleep and you can’t work out why, a sleep tracker might help. On its own, it won’t solve your ...

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 ...

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 ...

Apple Watch sleep tracking keeps getting better – delivering easy-to-read data, handy health insights, and scores that'll have you bouncing out of bed, but it’s not perfect ...

The Whoop 5.0 has several medical-minded tools, like ECG and blood pressure monitoring. Here's how I actually used them.

It is officially Sleep Awareness Week. We probably all know someone who tracks their sleep with a smart watch, but have you ...