With a slimmer titanium build, upgraded sensors, and proactive new Health Radar features, the Oura Ring 5 aims to widen the gap in the smart ring race.

Add Yahoo as a preferred source to see more of our stories on Google. Using a chest strap heart rate monitor can give you accurate, actionable insights to help improve your running. What is the best ...

Pretty much every fitness tracker and smartwatch has an optical heart rate sensor, but they're not always perfectly accurate.