Today, runners can track everything from stride length to sleep cycles, recovery scores to training readiness. The market is flooded with tools that promise insight, optimization, and marginal gains.

Thanks to the proliferation of smartwatches and fitness trackers, it’s never been easier to log your heart rate while running: Simply don the device, start your workout, and watch those beats per ...

Ready to take your training to the next level? Here are the best heart rate monitors to track your fitness and health goals ...

Zone 1 typically falls between 50 and 60 percent of your maximum heart rate, making it the lowest-intensity zone in the ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When I first started running, I always tried to aim to run at a fast pace, which constantly made me feel ...

Not that it was ever unpopular, but it’s fair to say that running is going through somewhat of a renaissance right now. Data released by Sport England in April of this year revealed that 250,000 more ...

Are you pushing your cardiovascular system to its full potential, or are you just wearing down your joints? We break down the ...

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 ...

Apple, Garmin, Samsung, Google or Amazfit? I put these watches through the paces to see where they land on step, distance and ...

As a certified personal trainer, I tested 16 wearables while training, running and swimming. Here are the best fitness ...

Here’s what actually happens to your body when you run a marathon - A performance physiologist explains how running 26.2 ...