Lack of time is often the main reason people don't exercise regularly. But a type of interval workout recently popularized by ...

High-intensity interval training, or HIIT, is a great way to torch calories, boost your metabolism and get a great workout in a shorter amount of time. And if you're a fan of hopping on the treadmill ...

High-intensity interval training involves performing an all-out, exhaustive physical effort for a short time followed by a short (sometimes active) recovery. Its benefits are clear: Effective HIIT ...

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 ...

Sprint interval training leads to different adaptations in mitochondria compared to traditional endurance training Photo: Getty Images, Niels Starnick; Collage: FITBOOK How training affects cells is ...

New research shows the 4x4 workout format can improve fitness faster than traditional workouts, such as jogging or cycling ...

Raise your hand if you hated doing suicide runs during basketball practice? How about the beep test during gym class? What about 100-meter rows during crew training? My hand is raised and it's raised ...

Here’s an example. Running an ultra marathon requires endurance, because the goal is to maintain a steady pace for several ...

HIIT exercise isn't for everyone and there's some evidence that you can overdo it. Here's what the experts recommend ...