Hello, aerobics is a new sport, which has only developed for more than 20 years since its rise, and there are many forms and schools of practice. People's understanding of aerobics is different, and their understanding of the concept of aerobics is also different. The English name of aerobics is "Aerobics", which is aerobic gymnastics or aerobic dance, and it is a kind of aerobic exercise. Therefore, we believe that "aerobics is a physical activity which integrates group exercises, dance and music, is based on aerobic exercise, and is characterized by health, strength and beauty". The basis and essence of aerobics is aerobic exercise or aerobic exercise. Aerobic exercise is a form of exercise in which the aerobic system of human body provides energy under the condition of sufficient oxygen supply. Its sports feature is moderate and low-intensity general activities lasting for a certain period of time, which mainly affects the heart and lung function of practitioners and is the basis of endurance quality. In fact, from the perspective of improving health, only aerobic exercise can affect the human body well and achieve the purpose of exercising. Therefore, aerobic exercise is the most essential feature of aerobics and the most positive aspect that affects the human body. In the description of the concept of aerobics, "integrating gymnastics, dance and music, featuring health, strength and beauty" is only the manifestation and external characteristics of aerobics. Opinions of gymnastics experts. Meekman, the founder of rhythmic gymnastics and a famous Swedish gymnast, advocates that the creation of rhythmic gymnastics is to integrate the movement rules of the human body into the movements. The viewpoint of representative figures of aerobics. Jane fonda, one of the famous founders of aerobics in the United States, believes that aerobics is gymnastics to improve physical and psychological feelings. Some scholars in our country believe that aerobics is an exercise method that integrates gymnastics, dance and music, and is re-created and organized into exercises according to the requirements of comprehensive and coordinated development of the body. Accompanied by music, it can improve health, cultivate correct posture, shape beautiful body and cultivate beautiful sentiment. Some aerobics experts believe that aerobics is a new type of sports with the human body as the object, bodybuilding as the goal, physical exercise as the content, artistic creation as the means, and collective exercise, dance and music as one. The concept of * * does not mention that aerobics belongs to aerobic exercise. Aerobics absorbs the characteristics of basic gymnastics, rhythmic gymnastics, modern dance, disco and other movements, and is a single movement, combined movement and complete set of movements that can be accepted by most people. It is novel in form, lively, rich in content, fast or slow in rhythm, and matched with harmonious music to achieve the purpose of cultivating sentiment, entertainment and fitness, which can be described as "combining fitness with entertainment". Classification of aerobics: According to the task of Japan and the practice of foreign countries, aerobics can be divided into fitness aerobics and competitive aerobics. The main purpose of aerobics 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. Aerobics also has many styles: general aerobics, jazz aerobics, pedal aerobics, fighting aerobics, yoga aerobics and so on. Fitness aerobics can be divided into three categories according to the form of exercise: unarmed aerobics, light equipment aerobics and special venue aerobics. Competitive aerobics Competitive aerobics is developed on the basis of fitness aerobics. At present, the accepted definition of competitive aerobics in the world is "competitive aerobics is the ability to complete continuous, complex and high-intensity movements with music, which originated from traditional aerobic fitness dance." Competitive aerobics adopts the form of complete sets of movements, in which continuous action combination, flexibility, strength and the comprehensive application of seven basic steps must be demonstrated, combined with the perfect completion of difficult movements. The main purpose of competitive aerobics is "competition", and its competition events include men's singles, women's singles, mixed doubles, three people and six people. Competitive aerobics must be carried out in strict accordance with the rules in terms of the number of participants, venue, complete set of action time and so on. The rules also have strict regulations on the arrangement of complete sets of movements, the completion of movements and the number of difficult movements. Besides fitness aerobics and competitive aerobics, there is also a kind of performance aerobics in China. The main purpose of performing aerobics is "performance". It is a set of aerobics designed for performance in advance, and the time is usually 2-5 minutes. The action of performing aerobics is more complicated than fitness aerobics, and the music speed can be fast or slow. In order to ensure a certain performance effect, the movements are less repetitive and not necessarily symmetrical. There is no limit to the number of participants, and formation transformation and collective cooperation can be added to the whole set. Performers can use lighting equipment, such as garlands, flags, etc. Some stylized dance movements, such as jazz dance, are also used to set off the atmosphere, infect the audience and increase the performance effect.