In TODAY.com's Expert Tip of the Day, a trainer explains how incorporating HIIT into a weekly workout routine can boost one's metabolism and help with weight loss.

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 ...

The 30-20-10 workout blends low, moderate and high-intensity intervals to improve VO₂ max, strength and running performance – ...

Stop viewing exercise as a solitary chore. By embracing group activities like HIIT, you harness the power of social ...

The Norwegian 4×4 method offers a powerful, time-efficient way to build an enduring body. By intentionally training your ...

Try this HIIT workout with no jumping if you want to give your joints a break but still get the afterburn benefits of HIIT. Squat jumps, plank jacks, and alternating split squats are often mainstays ...

The cardio world has split into two passionate camps that argue with the intensity of people debating pineapple on pizza. On one side, you have the HIIT devotees who swear by short, brutal workouts ...

Team-building is taking on a new form, with companies adding high-intensity team workouts to their list of corporate ...

The best exercise for over-70s and how often to do it for longevity has been revealed in the 5-year study results ...

Since HIIT workouts can get the job done in just 15 to 20 minutes, on average, they seem like the perfect way to exercise whenever you’re in the mood for a short but sweet round of cardio. So many ...

With picks from Nike, Reebok, and brands that might not yet be on your radar, these workout and gym shoes are designed for every type of activity.