Learn Best HIIT Cardio Workout for Weight Loss!

We find you the best (and fastest) HIIT workouts to build muscle and slash fat.

HIIT stands for "High Intensity Interval Training" (which makes one of the most popular phrases used to describe it, "HIIT training," totally redundant). You shouldn't necessarily think about HIIT as being any one style of exercise, like running or weight lifting.

Instead, HIIT is more of a framework, through which trainers can build out different routines depending on the equipment on hand, the experience of the participants, and the amount of time and level of difficulty desired.