The Xiaomi Mi Band series is an affordable jack of all trades. It can track daily activity and several health metrics like blood oxygen levels, stress, and the hours and minutes spent asleep. Rest is ...

The Index sleep monitor has two parts: the hardware, which is a flat little nugget of plastic and electronics, and the fabric band. The band is wide, soft, and stretchy. It’s about 2.5 inches wide, ...

The Index is a $170 armband that can track your sleep so you don’t have to wear a watch to bed. When I wrote yesterday about three different Whoop-like bands rumored to be coming soon, I didn’t know ...

Garmin's new Index Sleep Monitor fits around the arm to track breathing variations, sleep stages, heart rate variability, skin temperature and more. Caroline Igo Former Editor, Sleep Caroline Igo (she ...

The Apple Watch doesn’t track your sleep without the use of a third-party app, which means wearing it all night, and finding another time to charge it up. Yes, it’s workable, but it’s not ideal, and ...

For the past few months, I’ve been wearing an Oura ring to track my sleep. In December, I added a Whoop band for comparison’s sake. I was curious about them because I’ve seen so many ...

When I wrote yesterday about three different Whoop-like bands rumored to be coming soon, I didn’t know how close we were to one of them actually launching. Today, Garmin’s Index sleep monitor is ...