If you wear a fitness tracker, you’ve likely seen a stat labeled “HRV” pop up on your screen. But what does it mean, and does it matter? Short for heart rate variability, HRV has become a popular ...

M odern smart watches can measure an array of health indicators. Step counts and heart rates sit at the simpler end, while ...

Thanks to wearable devices, you can use all sorts of metrics to keep track of your health. You can check your weight, blood pressure, the number of steps you take, heart rate and more as you go about ...

Heart rate variability (HRV) and resting heart rate (RHR) are the metrics that most wearables' "recovery" numbers are based ...

Your HRV, also known as Heart Rate Variability, is, according to Dr. Elisabetta Burchi, about to “become the next vital sign we all track.” If you haven’t heard of HRV before, this refers to the ...

Heart rate variability (HRV) is the variation in the time between two consecutive heartbeats over a specific period. Doctors may use HRV as an indicator for certain aspects of a person’s health, ...

Imagine if your Apple Watch could tell you which days were best for you to do a workout, and what kind of workout you should do. Well it can, sort of, thanks to a hidden feature that few people have ...