HIIT is actually the abbreviation of high-intensity interval training, which generally refers to high-intensity interval training. This exercise is very intense, so it is very suitable for reducing fat, but we should also pay attention to the interval in the middle. It is also very helpful to exercise cardiopulmonary function. If combined with other training, the impact speed will have a very good weight loss effect for obese people, so it is also a very famous weight loss method and is deeply loved by young people.