High Intensity Interval Training, or HIIT, is a great time saver for your workouts while achieving the same benefits as endurance training. HIIT is a set of short bursts of intense exercise balanced with short breaks for quick recovery. HIIT can be combined with equipment or without. Make sure you are physically able before attempting HIIT. Check out these 5 reasons to start and take some more time to research more before getting into the workout.