A good rule of thumb to follow with cruise intervals is to make sure the amount of threshold work you do doesn’t exceed about ...

Lactate threshold workouts are one of the most important parts of a training plan when you’re running longer distances. Putting your body through this type of exercise will help you to run faster and ...

The old paradigm: lactic acid is a corrosive byproduct of hard exercise that makes your muscles burn and eventually brings you to a halt. The new paradigm: lactic acid doesn’t even exist in your body.

I’ve discovered the ultimate, magical, fitness-boosting super-workout several times over the past few decades. Usually it came after switching to a new coach or training regimen. In high school, for ...