When one partner is stressed, the other feels it too—not just emotionally, but on a biological level. New research on heart ...

Oura reports that heart rate variability (HRV) measures the variation in heartbeat timing, reflecting stress levels and recovery. Higher HRV indicates well-being, while lower HRV signals stress.

'Some athletes are really strict about it, but I don't mind sharing data' says Dutchman ...

Each Olympic cycle, athletes and support staff chase the latest cutting-edge knowledge in pursuit of Gold. In the Winter Olympics, both environmental (ie, cold) and sport-specific constraints present ...

Whoever we are, whatever we’re doing, we have a measurable heart rate. It’s a pretty clear sign of being alive. But what should your heart rate be when exercising? When we exercise, our heart rate ...

These days, everyone from the average Susan to the hardcore data-loving wellness enthusiast has the technology to track just about anything in the name of self-optimization. A ring wearable tells you ...

These days, it may seem like there’s a million different data points that you’re supposed to keep track of—hello, steps, sleep, and recovery scores!—and it’s difficult to know which ones are worth ...

A post hoc analysis found that the effect of transcutaneous auricular vagus nerve stimulation (taVNS) on cardiac and inflammatory stress responses was critically dependent on variability in baseline ...

Your heart rate can tell you a lot about your fitness and cardiovascular health. Your heart beats consistently, day in and day out, but you may not generally pay close attention to it. You might take ...

New research from Murdoch University has found that using a heart rate monitor can help improve PTSD and chronic pain symptoms. A new study led by researchers from Murdoch University’s School of ...

This article was made possible by the support of Yakult and produced independently by Scientific American’s board of editors. Earlier this year I got an Oura ring to track the state of my health. Soon ...