We tested the best heart rate monitors so you can focus on the miles, not the math.

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 ...

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 ...

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 ...

Heart muscle cells grown from patient stem cells—known as human induced pluripotent stem cell–derived cardiomyocytes, or ...

We’re coming down to the wire for the post-Thanksgiving consumer rush that is Black Frinday and Cyber Monday. We’ve checked all of the deals below for accuracy, value, and, you know, whether they’re ...

If you've been looking at interest-bearing accounts like high-yield savings accounts or certificates of deposit (CDs), you may see the terms "interest rate" and "annual percentage yield" (APY) being ...

The weight of the monitor (2lbs) is a factor especially on the Flat and it needs to provide a reliable ECG, which is what is being tested now. The first pilot scheme of 10 horses ran over the summer ...

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