Everything you need to know about photoplethysmography (PPG), the technology behind heart rate measurements in fitness watches and smart rings. When you purchase through links on our site, we may earn ...

Unlike your resting heart rate, which you can take with nothing more than a stopwatch and a finger to your pulse, tracking your heart rate variability (HRV) is more complicated. While it used to ...

The AirPods Pro 3 are equipped with a heart rate sensor that can send real-time data to multiple apps. (Apple) Your AirPods may soon become your most important pieces of fitness gear. One of the ...

To live is to have a heartbeat, which is why it makes sense for us living things to have a good understanding of our ticker. It’s well-known science that our hearts beat faster when we exercise and ...

If you wear a Fitbit, Apple Watch or a similar wearable while working out, you already know that you have a useful tool right at your fingertips. One especially helpful feature wearables like these ...

As your exercise session becomes more intense and more work is done, your heart beats faster and faster. This relationship means you can use heart rate as a surrogate measure for the intensity of ...