Ten leading medical specialists decode heart rate, covering exercise, sleep, medications, caffeine, hormonal changes, smartwatch accuracy, anxiety versus arrhythmia, and when to seek emergency care.

A recent study concludes that when it comes to resting heart rate (RHR), “normal” does not exist. Although most people’s RHR is relatively stable over time, from person to person, rates vary by as ...

Your resting heart rate is one of the simplest numbers your body offers. Most adults now see it on a watch or a fitness tracker every day. Yet many people do not know what the range means or when a ...

In TODAY.com's Expert Tip of the Day, a cardiologist explains why a lower resting heart rate can be a good sign of heart health and how to improve this vital sign. Resting heart rate — the number of ...

In a reward-free touchscreen game, Japanese macaques favored a button that made a puppet pop up in somewhat unpredictable spots, like curious humans. Six zoo orangutans heard laughter before learning ...

Your pulse is like having a direct line to your heart’s control room, constantly broadcasting information about your cardiovascular health that most people never bother to decode. While everyone knows ...

What we physicians tell patients should be based on evidence, but that doesn’t always happen. A good example is when patients ask what their pulse rate should be and we tell patients between 60 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 (watch, monitor, or other wearable), start your ...

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 ...