Cortisol Measurement: The Next Generation Heart Rate Monitor for Athletes

In addition to heart rate monitoring, elite athletes and biohackers of the future will be rigorously testing their cortisol.

Inside an Olympic Athlete’s Cortisol Rhythm During the National Championship

Olympian Shadrack Kipchirchir won the USA Track & Field Championships in January 2022. Here's what happened to his body on race day...

Drink Up: More Water Can Help You Destress Today

Hydration has a little-known perk: stress relief. In fact, research shows it can even boost your overall mood. Read on to learn more.

The Runner Who Wouldn’t Stop: The Epic Comeback of Shadrack Kipchirchir

As Olympian Shadrack Kipchirchir put it: “Either you get up or stay down.” Shadrack couldn’t be a better example of how to get back up...

Cortisol Testing Makes the Most of Your Training

Here's a behind-the-scenes look at some of the research comparing HRV and cortisol testing. And how these tools can improve your training.

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