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 ...

Sheehan echoes similar sentiments. "The intensity is what matters, not the clock. A focused 10-minute HIIT workout can spike ...

When it's too hot to exercise outside, running on the treadmill can be a great form of indoor cardio. However, not everyone likes working out on treadmills, and simply running on them with no plan can ...

Try this knee-friendly 35-minute workout, requiring no equipment, designed to burn calories and build strength safely.

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

High-intensity interval training (a.k.a., HIIT) is a triple threat: “It’s quick, easy, and effective,” says Angela Gargano, a certified trainer and creator of Strong Feels Good & Pull-up Revolution.

Learn more about this metric and the best training sessions to add to your schedule to boost your cardio fitness.

Nick Blackmer is a librarian, fact-checker, and researcher with more than 20 years of experience in consumer-facing health and wellness content. High-intensity interval training (HIIT) is beneficial ...

Participation in once-popular HIIT workouts is flagging. But experts say it’s still one of the best types of exercise you can ...

At times, even the hardiest running souls want to avoid the great outdoors, especially in the winter when you're faced with freezing temperatures, spine-tingling winds and precipitation to dampen both ...