Better results in less time. What's not to love about high-intensity interval training? Melt fat fast with this scientifically proven program. You don't have to spend hours on cardio equipment to burn fat. Try one of our HIIT cardio routines for faster fat loss.

You may have run across the term HIIT before (or high-intensity interval training). What is it?
It is a form of cardiovascular exercise that has you performing high levels of intensity for short durations coupled with rest periods. Each of these intervals is repeated for predetermined amounts of times in specified workouts.