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 ...

Presented by Athleta, this HIIT workout is basically a guaranteed confidence boost. Celebrity trainer Amanda Butler leads you through two different rounds of full-body interval training, helping you ...

This fun workout combines high intensity interval training (HIIT) with energizing movements inspired by Caribbean dance. Led by Selena Watkins, founder of Socanomics, and assisted by Tiff Marie on the ...

I recently decided to completely switch up my half marathon training. I swapped miles for time-based training runs, and because I’ve never been much for speedwork outside my high school cross-country ...

A sports medicine physician shares potential benefits of viral 12-3-30 workout. When you walk into a gym in the new year and spot a person walking steadily on the treadmill at a very high incline, ...

Workout trends come and go, but when it comes to the biggest bang for your buck, high intensity interval training, or HIIT, has staying power. HIIT’s specific origins are uncertain; some say it dates ...