HIIT WORKOUTS DEMAND that you give your all. You might find that you have a hard time pushing to your limits on your own—so you'll get closer to achieving your goals when you have a world class coach ...

In fact, this program is one of the most efficient and effective ways to exercise, she adds, because after each 20-minute HIIT workout, you'll reach excess post-exercise oxygen consumption (EPOC).

I ditched cardio for HIIT workouts for 30 days. The shocking results transformed my fitness, energy, and body. Discover all ...

Follow her on Instagram and Twitter. Try This 20-Minute HIIT Total Body Workout Try This 20-Minute Upper Body HIIT Workout Try This 20-Minute HIIT Upper Body Workout ...

Today we're going to do a High-Intensity Interval Training workout, or HIIT, H-I-I-T. What we'll do is 20 seconds of an exercise ... workout will take only four minutes. You can throw in these ...

But if you have only 20 minutes to pump iron, a few biceps curls and a quick jog won’t cut it—you need a workout that hits the whole body and burns as many calories as possible. Here are six ...

This full-body session from trainer Dan, one half of fitness duo TIFF x DAN, is a great option for those who have one dumbbell at home. Using that dumbbell for this workout you can build strength in ...

“HIIT training is extremely efficient. Many people don’t have the time for long, drawn-out workouts and HIIT training is ...

Set up interval training workouts the right way with these expert tips. But instead of putting together a 30-minute, non-stop workout, break up your program into shorter all-out intervals with ...

A workout that sculpts, strengthens, and keeps things fresh—without a ton of fancy gym equipment? Yes, please. This 20-minute routine blends Pilates with cross-training for a core-shaking ...