In terms of physical benefits of fitness, HIIT is not "better" than any other type of exercise. But it is more efficient. And that's one of its biggest perks — that it can net you major physical and ...

45-Minute Total-Body HIIT Workout Equipment needed: Cardio machine (treadmill, elliptical, bike, rower, ski erg), medium-weight kettlebell, pair of medium-weight dumbbells Directions: After warming up ...

We like interval training because you can pack a lot of effective exercise into a short amount of time. In fact, you can use it to do one of the most effective routines in only 20 minutes. Regardless ...