This workout routine for women at home combines cardio ... and arm circles. These fast-paced HIIT exercises can be done with ...

Today we're going to do a High-Intensity Interval Training workout, or HIIT, H-I-I-T ... once or twice a week to change up your regular routine on some days. Now, this workout is so intense ...

A good rule of thumb: you should not be able to talk and work out simultaneously during a well-programmed HIIT workout. Here's an example of a basic HIIT rowing workout. Total time: 12 min.

According to a recent study published on Cell Metabolism, too much high intensity exercise could have a negative effect on your body's molecular makeup. 5 reasons why you should try HIIT workouts ...