There seems to be something wrong with your answer. The main purpose of aerobics exercise is to "exercise and keep healthy". The action of aerobics is simple and practical, and the music speed is slow. In order to ensure a certain exercise load and comprehensive exercise, the movements are repetitive and appear in a symmetrical form. The exercise time of aerobics can be long or short, and the requirements of exercise can also be changed according to personal circumstances. Strictly follow the principle of' health and safety', prevent sports injuries, and achieve the purpose of exercising on the basis of ensuring safety.