The blood creatinine value of people who exercise frequently will be higher than that of ordinary people, and the blood creatinine will appear significantly higher when examined after a lot of strenuous exercise. This is because the blood creatinine in human body is mainly divided into endogenous and exogenous, and the main source of endogenous creatinine is the metabolites of muscles, which are mainly excreted through the kidneys, so at this time, if a lot of strenuous exercise, high creatinine production can occur. At this time, it will exceed the excretion of the kidneys, thus leading to a mildly high blood creatinine, do not worry too much, stop exercising and normal diet for a few days and then recheck the kidney function and test the blood creatinine, at this time most patients’ blood creatinine will return to the normal range.