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 ...

Runners have two main paths to choose from when it comes to running goals: run faster or run longer. Both will make you a stronger, fitter athlete—but training for one looks a little different than ...

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.

If you’re like many runners, especially starting out, you push the pace. Getting ready for a big race might make you do it too. Faster feels totally logical for getting good race times. This idea ...

To become a better runner, you need to improve your running economy – here’s what that means and how it differs from VO2 max.

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? Picture this: You’re training for a race and have been determined to knock a ...

Polarized training is based on a clear 80/20 distribution: 80% of your training at low intensity (max HR 65–75%) and 20% intense (at or above the anaerobic threshold), while the middle zone is largely ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." RUNNERS CAN EASILY fall into a basic routine for their workouts: Lace up, hit the pavement, then cruise ...