These days, it may seem like there’s a million different data points that you’re supposed to keep track of—hello, steps, ...

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 ...

Your heart rate variability (HRV) score shows the variability between heartbeats. This helps measure how well your heart responds to stimuli like stress and physical activity. There are several ways ...

Abnormal low heart rate variability (HRV) is associated with both medical and psychiatric disorders. HRV biofeedback is a recently developed technique that aims to modulate HRV in ways that have ...

If you own a fitness tracker, you’ve likely come across the term HRV (heart rate variability). You may have even seen people proudly posting their HRV numbers on Instagram. But what can the ...

We know the beat of our heart varies over time, increasing with exertion and slowing with rest or meditation. But, stable as those variations may appear, they vary even within those intervals. Dr.

Scientists have a lot to learn about the connection between sleep and stress, but one thing is clear: They're both trending in the wrong direction. As revealed in a recent Gallup poll, the proportion ...