As a bodybuilder once said: bodybuilding is out of control, people only pay attention to you on the stage, and whether your muscles are big enough won't care about your health at all. More legendary bodybuilders need to spend about $30,000 a year on growth hormone GH, not counting insulin and steroids. So bodybuilding is even less popular. Don't question China's muscular talent. There are really so many medicines available, and it can be done. Look at Huang Zhihong in South Korea. Growth hormone, as its name implies, is the place where all parts of your body grow, from muscles, spleen and stomach, bones to navel, tongue, eyes, etc. It can promote muscle synthesis and reduce fat, so many bodybuilders use it together with insulin and steroids, creating a lot of muscle behemoths weighing 300 pounds! Some people think that growth hormone can promote growth and height. It is true that some teenagers with insufficient secretion of growth hormone can use it, but for adults with closed epiphysis, abusing growth hormone will only make your joints thicker and taller? That doesn't exist. Generally, the internal organs of adults will not grow again, but injection of growth hormone can make the internal organs enter the second spring and the n spring of growth. Look at their big bellies, their hearts, spleen, stomach and kidneys are all increasing rapidly, and this increase is irreversible. The number of muscle fibers in human body is constant. The mechanism of action of steroids is to transport protein into muscle fibers and promote muscle growth. However, growth hormone increases the number of muscle fibers, and it is often necessary to remove excess muscle fibers. There is no good way except surgery.