Before doing fitness training, first of all about the general knowledge of human muscle groups. Understand the various parts of the body muscle groups and to understand different types, in each muscle function and function, so as to complete all kinds of Aerobics movements correctly, promote the development of the muscles, increase muscle mass volume, muscles bulge, clear lines. Muscle is widely distributed in the body, the body has about 520 muscles, accounting for almost 40 of the weight of the body, the human body is the body of the main body of the muscles of 50%. Generally speaking, the name is classified according to the type, shape, position, function and so on.

　　Muscle fitness experts also map software muscle distribution map, we can look at, understand the action is that a muscle, look at the distribution of muscle, is called in, after the action when the muscle yongxinquganshou force, it is very important to increase muscle friends.

　　There are 3 types of muscles: one is dominated by the awareness of human muscle, called voluntary muscle; the other is not governed by the awareness of human muscle, called involuntary muscle (such as the delivery of food into the stomach muscles); there is a call to the myocardium, peculiar to the heart.

　　According to the position of a muscle, pectoral muscle, abdominal muscle, psoas muscle; according to the function, a flexor and extensor; according to the shape, with long and short muscle muscle, latissimus dorsi muscle; according to the number, there are two biceps and triceps muscle and the femoral head four arranged in the direction of fiber points; having pinnate muscle. The feather is divided into four parts: the feather, the half and the feather.