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 ...

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 ...

Thanks to the proliferation of smartwatches and fitness trackers, it’s never been easier to log your heart rate while running: Simply don the device, start your workout, and watch those beats per ...

Calculate your target heart rate zone and work to stay in the middle of that zone while you’re doing your cardio. Here’s how you do it: According to the American Heart Association, a person’s target ...