Staying up late has an effect on the physical examination, and it is all-round. Specifically, there are the following points: 1, affect liver function, staying up late will cause an increase in transaminases, whether it is glutamic aminotransferase, or glutamic oxalacetic aminotransferase, may appear high. 2, staying up late will cause changes in blood sugar, staying up late will eat a lot of food, or make excessive consumption of sugar, these will affect the measurement of blood sugar value. 3, the impact on kidney function, staying up late can make the muscle too metabolic, and produce a large amount of creatinine, can not be discharged out of the body, the test index will appear abnormal rise in creatinine. 4. Staying up late can also have an effect on heart rate and blood pressure.