After testing the best smart rings for several months, here are our top picks, including Oura, Samsung and more.

body temperature, and more to provide data-driven guidance on your exercise regimen and overall health. Also: The best smart rings you can buy I love using my smart ring when I work out.

Cycle tracking is another standout, using body temperature fluctuations to ... between the sleep tracking accuracy of the best smart rings and the best wrist-worn sleep trackers.' ...