The so-called dead muscle is a common saying, and it is definitely not from books. But in reality, there is such a situation, that is, the muscles are thick and the absolute strength is great, but the relative strength (explosive force) is relatively small. This type of muscle seriously affects flexibility and cannot give full play to its role in sports. But this kind of muscle has great strength and good endurance, which is reflected in carrying heavy objects and sufficient times. If we put it into basketball, we need more relative strength, because it is more suitable for the characteristics of this project. But then again, the relative strength without absolute strength is limited. We should develop both relative strength and absolute strength. A simple test of the relative strength of the upper limb is to contract the biceps brachii to the maximum and then relax to a normal state. The greater the difference between the two situations, the greater the relative strength of the arm muscles. Furthermore, the so-called "dead muscle" refers to the number of muscle fibers that do not participate in normal work when muscles contract during exercise. Generally speaking, muscles don't do work or have poor efficiency. It must be noted that "dead muscle" is relative to sports, such as the muscle shape of weightlifters and the way of exerting strength during sports. If you are running, it is called dead muscle. The concept of "dead muscle" is not rigorous. Muscle, that is, muscle tissue, is composed of muscle cells, usually called muscle fibers. The so-called "dead muscle" refers to the muscle formed by the increase of a single stimulus. Due to the lack of overall coordination in the training process, the limbs have strength but cannot cooperate, which eventually leads to the decrease of physical flexibility and adaptability.