HIIT can take your training and performance to the next level. Here’s everything you need to know about this style of ...

Greg Ho, a 72-year-old marathoner who began running in his 50s, has completed 43 marathons and has no plans of slowing down.

The president of an NYC venture-capital firm wants to run 100 marathons by his 100th birthday. He fits training into his busy ...

“The idea is to alternate between 20 minutes of moderate-intensity exercise and 10 minutes of rest or low-intensity activity.

Running increases the heart rate ... and lowering cholesterol levels. HIIT (High-Intensity Interval Training) involves ...

What Are the Benefits of Zone 2 Training? One key benefit of Zone 2 training is that it stays below the body’s lactate ...

If you’re a runner, there’s a strong chance you ... live tracking for friends and family to follow along, plus interval training. This isn’t the best-looking app you’ll ever download ...

I’ve logged hundreds of miles of indoor running, mostly on good treadmills thankfully, but have also run enough on bad ones to help you steer clear of them. While they are an expensive purchase ...

Doctors recommend more intense and more varied workouts, with an aim of 150 minutes of physical activity a week.

HIIT training is good for your health and makes you fitter and faster. Join Runner’s World+ for the latest training tips and advice! HIIT sounds very scientific, but it’s really very simple.