Ready to take your training to the next level? Here are the best heart rate monitors to track your fitness and health goals from WHOOP, Garmin, Oura, and more.

I’ve tested dozens of fitness watches and these are the best options I’d recommend depending on lifestyle and health goals ...

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 ...

This is the ultimate heart rate variability deep dive—nuanced, practical, and funny. I'll even share a story involving Andrew Huberman, Starbucks, and my girlfriend’s friend seeing my butt.

Brand experts explain that wearable devices' reliability for metrics like distance, heart rate and sleep are continually ...

Apple Watch and other fitness trackers have the capability to provide us with information on cardiovascular parameters that reflect the activity of the autonomic nervous system. Measures of that ...

Heart rate variability (HRV) measures the fluctuations in time between heartbeats. While it isn’t a health metric you need to overthink, HRV is an indicator of how well the body can adapt to and ...

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 ...