Creatine has no obvious side effects when eaten normally. The biggest side effect in the past was excessive stimulation to the stomach. Now many new formulas have solved this problem. Creatine mainly provides you with ATP for anaerobic exercise. ATP is adenosine triphosphate, which is the direct energy source of your muscles. It exists in nature, in beef, fish and other foods, but its content is not high. Creatine is usually stored in muscle, and its stock is limited. Through liver synthesis, taking creatine is to supplement the high-purity creatine with low content in your diet and help you provide more strength for muscles during anaerobic exercise, thus improving the training level. Creatine is a chronic tonic, which means that you won't feel anything obvious after eating it, but if you keep eating it, your training level will improve steadily. Traditional creatine monohydrate has a shock period of about a week because of its low absorption rate. Take creatine three times this week, so that the body can accumulate creatine, which is a little irritating to the stomach. Some people will feel comfortable in your stomach, but they will not get sick. There are later more expensive products, such as esterified creatine, which have high absorption rate and do not need shock period. Basically, eating it for two days can improve your state, but creatine is not a stimulant and will not make your grades soar. However, creatine cannot be eaten continuously. Generally, if you eat a can, you should stop eating it for 2 weeks, otherwise the effect will be affected. There is not much negative effect on the liver. This is a substance that exists in nature, and the amount is not very large. Whether it will become dead muscle depends mainly on the way you practice and your recovery after practice, and has nothing to do with creatine and other supplements.