Sleep trackers don’t necessarily measure sleep directly but instead infer states of slumber from signals like heart rate and movement.

Respiratory rate, another metric in the Apple Watch vitals app, shows how many breaths you take per minute. This typically ...

As the devices continue to gain popularity, experts say it is important to understand what they can and cannot tell you, and ...

Nearly half of adults (48%) have used a sleep tracking device, such as a smartwatch or app, to monitor their sleep quality and duration – up from 35% in 2023, according to a new survey from the Americ ...

I’m captivated by my new personal health tracker, a Christmas gift from my husband. It’s fascinating to know my heart rate, respiration, activity, readiness and stress levels at any moment. Yet it’s ...

I was recently talking with a friend who had asked me for suggestions regarding his poor sleep. One of the first recommendations I made to him (as well as to almost anyone who comes to see me) was to ...

People have been more inclined to use trackers nowadays; however, it is crucial to assess the actual practicality of these ...

Many smartwatches, fitness and wellness trackers now offer sleep tracking among their many functions. Wear your watch or ring to bed, and you'll wake up to a detailed sleep report telling you not just ...

How does a sleep tracker on your finger compare to one in a bed? I tested Sleep Number and Oura for a month to find out. Plus, expert sleep-tracking tips. Aly Lopez Former Writer I Aly Lopez was a ...

Is sleep tracking actually useful in daily life, or is it just data overload distracting you from what matters? After tracking my sleep every night for a year, I have some answers. Owen Poole, a ...

Until I got my Oura Ring last year, I had no idea if I was getting high-quality sleep. I was exhausted almost every morning, and I couldn’t find any patterns in my routine that could explain why. If, ...