Keep scrolling for 21 great high-intensity workout options to try that range from five to 45 minutes and include all different protocols. Note that since HIIT has such a broad definition we used ...

The ideal treadmill workout duration for fat loss generally depends on your fitness level and goals. Here's a breakdown: Beginners: If you're just starting out, aim for 20 to 30 minutes of ...

For fitness enthusiasts who need a little cardio variety, HIIT (or high-intensity interval training) has long been a popular ...

Your boring workout is secretly sabotaging results try HIIT for faster fat loss muscle gains and nighttime metabolic burn.

When I heard about Jazzercise’s new Vital Sculpt HIIT workout specifically designed for midlife women, I had to give it a try ...

If you hate running, the good news is it’s not the only way to burn calories and build muscle — HIIT training is a great alternative, especially if you’re short on time. In fact, you’re ...