Waking up exhausted despite your Oura Ring’s reassuring 85 sleep score creates a special kind of modern hell. You feel rested, but the data says otherwise-or worse, you feel terrible while your Fitbit ...

Apple Health brings sleep tracking, scheduling and long-term analysis into one place, with your iPhone acting as the hub and the Apple Watch doing the overnight monitoring. Once everything is set up, ...

Much has been written about the effects smartphones can have on your sleep. For several years, researchers have been warning that the blue light emitted by touchscreens can interfere with sleeping ...

Sleep tracking is about to get a lot cheaper and a lot more popular. Google’s new Fitbit Air, announced May 7 and shipping May 26, 2026, brings sleep stages, heart rate variability, blood oxygen and ...

N early half of all Americans and around 40% of Britons now use a smartwatch, smart ring, phone app or another similar device to track their sleep. Are these gadgets accurate—an ...

Ever wonder why some mornings you wake up ready to go, and others you feel like a zombie? The difference often comes down to when you wake up during your sleep cycle, and that’s exactly what a sleep ...

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 ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. January 29, 2026 Add ...