Fitness trackers and smart watches are widely popular wearable devices that measure several types of health metrics, including step count, calories burned, sleep quality, Vo2 max and heart rate.

First study to link lower resting heart rate variability with sexual difficulties in women Chances are good that women with a low heart rate variability also suffer from sexual dysfunction. That's the ...

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 ...

A few of the most important insights are heart rate variability (HRV), which describes the difference in time between the ...

On average, most of us have a resting heart rate which varies between 60 and 100 beats per minute, a range which has long been considered as normal. However, some evidence has begun to suggest that if ...