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 ...

The Frontier X2’s accurate metrics and helpful screen more than make up for its busy app.

In healthy older adults, heart rate returned to about 97 percent of resting values after a moderate step test while ...

An afterthought by many brands over the last decade, accurate stress-tracking wearables with useful features and insights are finally here. Household-name smartwatches and fitness trackers aren’t the ...

Did you know there’s a number that might let you know how stressed you are, whether you have a cold coming on and how to get into the zone if you’re about to present at a big meeting? You can find ...

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 ...