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.

A lower resting heart rate indicates an efficient heart and a higher level of parasympathetic activity. When you’re at rest, your nervous system ideally minimizes sympathetic activity, so you’re ...

Reported results included improvements in overall cognitive performance, working and episodic memory, faster reaction time, improved PROMIS sleep-related impairment, a 7.5-year reduction in estimated ...

Wearables have been one of the hottest trends in fitness for years. Top brands like WHOOP, Oura, and Garmin promise smarter training and better readiness, but all that data can be overwhelming if you ...

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 ...

Even though I prefer not to train and coach by heart rate, I have found that using these numbers—specifically resting heart ...

Even mild dehydration can negatively affect your brain functioning and attention span, so it could be holding you back at work and getting in the way of your goals. Drinking a glass of water could ...

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 ...

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