Many of you may have heard of high intensity interval training (HIIT) in connection with losing weight quickly. What happens generally is that people tend to start with high enthusiasm but the repetitive nature of cardiovascular exercises makes it really hard to continue without getting bored. The high intensity interval training is a way to do more workouts in comparatively shorter period of time with short burst of intense exercises. With this training the person can burn large number of calories in a comparatively smaller period of time. We can classify high intensity interval training into three types which...