We're definitely fans of exercise snacking, but sometimes nothing but a long, sweaty workout will do — and if that's what you're craving, this 45-minute high-intensity interval training workout with ...

HIIT workout founded by a Japanese Olympic coach that uses periods of intense exercise and rest to burn calories.

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

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 ...

This 15-minute HIIT ab workout helps you get the most core-strengthening benefits from every rep by focusing on time rather than reps. Long sessions at the gym have their place, but when it comes to ...

This full-body routine fits into even the busiest schedule. This full-body routine fits into even the busiest schedule. Credit... Supported by By Hilary Achauer Videos by Theodore Tae You started the ...

Short bursts of exercise might provide some benefits, but don’t cancel your gym membership just yet. By Cindy Kuzma A few lucky people find a fitness routine they love and stick to it. But many of us ...