Is the drug cycle (cycle), to put it bluntly, drugs, hormones, anabolic steroids, etc., can break through the latitude of human muscle growth and recovery time. It can make you train harder and recover faster. Professional competitive bodybuilders practice very hard because they are drugged, otherwise they will never recover. There are few professional athletes who don't take drugs. It's no use taking medicine if the amount of training and diet can't be guaranteed. At present, the competition in the sports industry is fierce, others have made achievements in drug abuse, and everyone can only be forced to take drugs. These are basically American, originally used to improve athletes' performance, and the side effects are not particularly certain. Now in the United States, steroids and other drugs are prescription drugs, which are prescribed by doctors. Reasonable and legal, private trading is illegal, so there is no way to do relevant research. Of course, this is all about professional athletes. Generally speaking, as long as people do a good job in diet training and rest, they can get a good figure, and the arm circumference of 45 is not a problem. There is no problem with natural bodybuilding in small and medium-sized bodybuilding competitions. If you practice hard, you can get good grades. We can understand this thing but we don't advocate it. After all, fitness needs iron supplementation more than taking medicine.