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 ...

That HIIT workout routine is upping your cortisol (stress) levels. The head of research at Les Mills wants you to keep it under 40 minutes per week. “Cortisol is not particularly a ‘bad’ hormone, it’s ...

While the past few years have seen the rise (and rise) of low-intensity workouts, like Pilates and yoga, grow in popularity, there’s still a very valid case for adding in some high-intensity interval ...

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

If you’re looking to add some kick to your workout and save time while doing it, it's probably time to try a 15-minute HIIT workout. “HIIT, or high-intensity interval training, essentially means you ...

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.

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You've likely heard all about the benefits of exercise for your heart, lungs and blood sugar. Basically, it does the whole body—and mind (thanks, endorphins!) good. However, you may have stopped using ...