Jazz class is good. In the exercise of losing weight, although both shaping and fat-reducing classes and jazz dance classes can play the role of slimming and shaping, jazz dance has the advantages of being entertaining and easy to understand, which is better than jazz dance classes. Jazz dance, that is, American modern dance, is a fast and dynamic rhythmic dance, belonging to an extroverted dance, unlike an introverted dance shown by classical ballet or modern dance.