Sprinting — in which you alternate short bursts of fast running with longer periods at a slower pace — makes for a great and efficient workout, but it can also be intimidating for beginners. Sometimes ...

Let's start with a bold statement: There are runners who only want to live life in the fast lane. And then there is the other kind of runner, who prefers to maintain a slower, steadier pace—even if it ...

As HIIT's popularity soars, sprint interval training, or SIT, is doing its best to catch up. Can shorter, harder, faster deliver better results? As the popularity of HIIT continues to soar, sprint ...

Social media is once again buzzing with a bold fitness promise. This one suggests that if you perform a few minutes of all-out sprinting, your body will supposedly burn fat continuously for the next ...