Aerobic exercise refers to the physical exercise carried out by the human body under the condition of adequate oxygen supply. That is, in the process of exercise, the oxygen inhaled by the human body is equal to the demand, achieving physiological balance. The main form of bodybuilding is to load external resistance through muscles, do centrifugal work or centripetal work, and force muscle fibers to thicken. Usually, most of the weight is my maximum weight, so I need to inhale and exhale, and work with sufficient oxygen.