Oura Ring 4 review: This smart ring is a great sleep tracker, but not a great activity tracker ...

Choosing the right size for a smart ring can be a real headache, with customers needing to use sizing kits before purchasing. Patents reveal that companies are developing smart rings that can ...

I’ve always preferred to wear my Oura ring on my ring finger. The company says that “for optimal performance and accuracy,” it’s best to wear it on your index finger, but that any finger can work. And ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...