The next day before the physical examination can not drink water before 0:00 on the day before. Usually you need to fast and abstain from food and water for more than 8 hours before the physical examination, but this is not absolute. You can drink less water when you are thirsty, especially for people with some diseases, such as diabetes, coronary heart disease, etc. The physical examination should be noted that the day before the examination must avoid overeating and drinking a lot of alcohol, which can cause loss to the body. Especially for liver function will appear damage, will affect the glutathione transaminase and glutathione aminotransferase and other test values, thus interfering with the body’s normal indicators. In addition, hypertensive patients can also take antihypertensive drugs before the physical examination that day, you can drink a small amount of water, these are not much of a problem.