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.

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 ...

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 ...

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 ...

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 ...

Sitting quietly at your desk, watching TV, or lying in bed at night, your heart should be taking it easy – beating steadily and calmly at somewhere between 60 and 80 beats per minute for most healthy ...

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

A recent study showed that the heart rate variability of a dog and its owner adapt to each other during interaction. High heart rate variability is associated with relaxation, while low heart rate ...