It is really helpful to enhance strength (only by strengthening muscles can you exercise), because beef and mutton contain a substance called creatine, which can improve the strength level. In fact, the human body contains creatine, but the content is not much. The content of creatine ingested from beef and mutton is too small, so it can actually be used externally. Generally, people who exercise will buy creatine to take it. Moreover, because creatine is already in the human body, taking creatine has no side effects, but it is necessary to be careful not to take too much at a time or take it for a long time. Generally, it will be stopped for one month to avoid dependence.