The phrase “putting the hammer down” commonly refers to drivers smashing the accelerator pedal to pick up a burst of speed, often to beat a waning yellow light. Runners use this idiom in much the same ...

Fartleks are a well-known and popular running workout—or at least they’re something runners talk about all the time. But how many of us have gone out and said “I’m doing a fartlek today” and actually ...

Interval training workouts involve structured exercising at different intensities with recovery periods in between. High intensity is usually anaerobic exercise, while the recovery periods involve ...