One of the big debates in endurance sports these days is about “training intensity distribution,” which is a fancy term for how much of your training time you spend going easy, medium, or hard. The ...

Most runners run too hard. We log the majority of our miles at moderate- and high-intensity speeds, barely deigning to hit the low-intensity paces that are so essential to building an aerobic base.

When legendary sports scientist Carl Foster was honored by the American College of Sports Medicine last year, he was asked which among his 570 peer-reviewed publications was his favorite. He singled ...

High-intensity workouts are some of the best ways to improve health and athletic performance. With a short, intense interval workout, researchers have found that some people see benefits equal to or ...

When you think of progressing as a runner, you probably think about getting faster and/or going farther, but there’s another variable to consider: running intensity. To Steve Mura, manager of runner ...