Consider speed a goal that never goes out of style. Whether you have a (likely virtual) race on the calendar, or you’re just bored with your run routine and need a new challenge, intervals should have ...

Fitness gurus and weekend warriors alike are sold on the benefits of high-intensity interval training (HIIT). The research is clear: Break your training into high-intensity spurts of activity followed ...

Whatever your exercise of choice may be, chances are pretty good you’ve heard of the term high-intensity interval training, or HIIT. In fact, HIIT ranked among the top 10 worldwide fitness trends as ...

Sprint interval training, or SIT, is super trendy right now. It’s a great way to improve your running speed and to get in a hard interval workout, and I’ll explain exactly how. But I also need to ...

Interval training has become very popular these days, thanks to high-intensity interval training, or HIIT. Proponents of this type of exercise say it delivers many of the benefits of a much longer ...