A pulse oximeter is a device that clips on your finger, toe, or earlobe to measure blood oxygen saturation. Here's how it works and how to read it.

From Apple Watches to Fitbits to treadmills, there are more ways than ever for people to keep up with their vitals. So why does so much fitness tech check your pulse? Because your resting heart rate ...

If you’re using Apple’s Fitness app, the AirPods Pro 3 will continuously monitor your pulse during a workout. In addition to the heart rate sensor and accelerometer in the earbuds, details like ...

Years of research have showed that pulse oximeters yield less accurate readings for people with darker skin tones, and now the US Food and Drug Administration is proposing guidance to help make these ...