New VO₂ Testing Insights Suggest Popular Fitness Metrics May Be Leading to Ineffective and Counterproductive Workouts ...

A few of the most important insights are heart rate variability (HRV), which describes the difference in time between the ...

Is your smartwatch's heart-rate data accurate? We lab-tested 58 devices, from Apple and Garmin to smart rings, against ...

When it comes to exercising, your heart rate is the gold-standard metric to uncover how hard you're pushing. It tells you whether you're working aerobically or anaerobically, how your body is reacting ...

As a tech expert, I test for two things when trying out a new upgraded release—first, what exactly are the new features, and two, are they good enough to warrant purchasing a new version of the ...

It depends, of course. But on what exactly? Running coach Matt Fitzgerald explains a simple process of finding your ideal heart rate.