Knowledge is power when it comes to performance, these picks help you get it.

Wearables measure several aspects of health, and heart rate variability might be one of those. It may be surprising when your device informs you that your heart rate variability is high or low, but ...

What is heart rate variability (HRV)? As popular as the metaphor may be, a healthy heart doesn’t beat as regularly as a metronome. In fact, it changes its rhythm with each beat. Heart rate variability ...

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. As a ...

The rhythmic beating of your heart tells a more complex story than most realize. While standard health assessments typically focus on heart rate, the subtle variations between individual heartbeats ...

New predictive test: Samsung and a Korean hospital tested Galaxy Watch 6’s ability to forecast fainting episodes up to five minutes ahead with 84.6% accuracy. How it works: A PPG sensor monitors heart ...

Heart rate variability has become the wellness scene’s favorite recovery score, but experts say most people misunderstand 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 ...

An increased heart rate from exercise had minimal impact on driving and wedge performance. An increased heart rate from anxiety, pressure and consequence activates the sympathetic nervous system in a ...