Blood glucose may be elevated when blood glucose is measured half an hour after exercise. After exercise, sympathetic nerve excitation will occur, and at the same time, there will be some hormones in the body that will cause blood glucose to rise, such as increased secretion of catecholamines, increased secretion of epinephrine and norepinephrine, which will accelerate hepatic glycogen isomerization and raise blood glucose; at the same time, cortisol and glucagon can be increased after exercise and raise blood glucose. Exercise can help the body to burn energy after exercise, which may also raise blood glucose. Therefore, blood glucose should be tested after exercise, and it is normal for the measured value to rise. If a persistent rise in blood glucose occurs after stopping exercise, medical attention should be sought.