Learn more about this metric and the best training sessions to add to your schedule to boost your cardio fitness.

Many runners strive to get faster, and boosting VO2 max is often part of that goal. One way to achieve both: The interval ...

VO2 max is an important measure of aerobic conditioning, whether you’re an Olympian or just a person hoping to stay healthy ...

Here is a question from a future Navy diver or rescue swimmer who is considering his options and working on becoming better ...

Combining Zone 2 running, goal pace running and sprinting in your weekly training plan can be ideal for developing aerobic endurance, pacing skills and explosive speed.

The Amazfit Active Max impressed us with its sleek looks, reliable tracking and a mind-boggling range of features. The best part? It costs just $169.99.

Triathlete Kristian Blummenfelt’s score puts elite endurance into context ...

The protein threshold for building muscle may be lower than you think.

The Cleveland Cavaliers got crucial injury updates on Evan Mobley and other players, while rumors of a LeBron James return continue to grow.

Apple, Garmin, Samsung, Google or Amazfit? I compared each one against a chest strap for heart rate accuracy and found a ...

Cardio fitness shows heart-lung strength, predicts longevity, and improves health at any age.

Most people slow down after retirement. Juan López García hit the gas. The car mechanic from Toledo, Spain, didn’t lace up ...