Eating greasy food the day before the physical examination is usually not allowed. 3-5 days before the physical examination, you should pay attention to a light diet and eat less high-fat and greasy food such as pork liver, pork kidney and pork large intestine to avoid affecting the results of the blood lipid examination. In particular, eating greasy food can lead to a significant increase in triglyceride levels, which can affect the results of the blood lipid examination and even affect the entry into the job, causing unnecessary trouble. Therefore, before the physical examination, pay attention to eating as light as possible and do not drink too much sugary drinks to avoid affecting the blood glucose test results. Eating greasy food also tends to cause the blood to be particularly sticky, and blood tests are prone to abnormalities in various areas.