Dear Doctors: I'm a 55- year-old man, and I have been active all my life. I know target heart rates are based on age and was surprised that my heart rate while running is often between 150 and 195.

Add Yahoo as a preferred source to see more of our stories on Google. 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 heart rate can tell you more about your workout than speed, distance, or calories burned.

Whoever we are, whatever we’re doing, we have a measurable heart rate. It’s a pretty clear sign of being alive. But what should your heart rate be when exercising? When we exercise, our heart rate ...

If your Fitbit Charge 6 is giving you heart rate readings that are clearly wrong — showing 85 BPM during a HIIT workout when you’re gasping for air, spiking to 200 BPM while you’re sitting on the ...

Apple Watch software got little airtime at WWDC, but between AI upgrades, health features, and UI changes, there's still a lot I’m hoping to see fully realized.