Our fast friends enable us to train at a higher level with reduced exertion, but are there t...

By Jason R. Karp, Ph.D.

Running affects the female body differently than the male body. Here’s everything women shou...

By Jason Karp

More than half of all runners fall victim to injury—but it doesn’t have to be this way. Foll...

By Jason R. Karp, Ph.D.

By using heart rate to train, this runner found that to get faster, she had to slow down.

By Jason Karp

As you head into the final stretch of training before 26.2 miles, keep these tips in mind.

By Jason R. Karp, Ph.D.

A stronger core aside, have you ever wondered if all these strength training suggestions wil...

By Jason R. Karp, Ph.D.

Add downhill running to your training and watch your PRs plummet with the hills.

By Jason R. Karp, Ph.D.

Do you know your running facts from fiction? Debunk some of the running world's most common ...

By Jason R. Karp, Ph.D.

Ever drive by a gym on your way home from work? Here are six reasons to stop in next time an...

By Jason R. Karp

Most runners know the importance of a warm-up run before hitting the starting line. But many...

By Amanda Casanova