Your heart rate can tell you a lot about your fitness and cardiovascular health. Your heart beats consistently, day in and day out, but you may not generally pay close attention to it. You might take ...

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 ...

Normal Slow Walking Heart Rate Causes of Faster Heart Rate Measuring Heart Rate How to Lower Heart Rate When to See a Doctor You may know your target heart rate when working out or your ideal heart ...

Your heart rate is the number of times your heart beats in a minute—while it may not stay the same due to changes in response to things like your activity level and emotional state—going high can be ...