You can drink water the night before the physical examination. Although the physical examination has strict requirements for diet and water, you can drink water the night before the physical examination, and drinking water the night before the physical examination does not affect the results of blood sugar and lipid examination. For gastroscopy, colonoscopy, barium meal examination of the upper gastrointestinal tract and ultrasound examination of the liver, gallbladder, pancreas, spleen and kidneys do not affect the results of the examination, so it is possible to drink water in the night before the physical examination. But on the morning of the physical examination, you cannot eat or drink water, and you should pay attention to carrying your ID card to the check-up center or health management center of the hospital for the physical examination. In the days before the physical examination should pay attention to a light diet, the night before do not overeat, pay attention to eat less high purine, high fat, high carbohydrate food to avoid affecting the results of the physical examination.