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

Fitness trackers and smart watches are widely popular wearable devices that measure several types of health metrics, ...

Here’s what this health metric really indicates, according to cardiologists. Fact checked by Isaac Winter Reviewed by Vivek Cherian, MD Heart rate variability (HRV) is the difference in the timing ...

Respiratory rate, another metric in the Apple Watch vitals app, shows how many breaths you take per minute. This typically ...

Using a chest strap heart rate monitor can give you accurate, actionable insights to help improve your running. What is the best chest strap heart-rate monitor overall? The best chest strap heart-rate ...

Heart rate variability during sleep can predict stroke, depression or cognitive dysfunction years in advance, according to new research presented at the European Academy of Neurology Congress. The ...