What is HIIT?
HIIT, or high-intensity interval training, is a training technique in which you give all-out, one hundred percent effort through quick, intense bursts of exercise, followed by short, sometimes active, recovery periods. This type of training gets and keeps your heart rate up and burns more fat in less time. (http://dailyburn.com).
Effective fat burner
Increases VO2 levels (amount of oxygen can use and an indicator of cardio fitness)
Reduces lactate accumulation, meaning you can train for longer and harder
Increases your metabolism
HIIT workouts are generally done using your bodyweight, so don’t worry if you have no equipment
HIIT can be done anywhere: at home, the office, a park, etc.