The diet before physical examination is directly related to the examination results. A reasonable diet can store the energy and water needed for exercise in the body, at the same time eliminate the discomfort of the intestine during exercise, enhance self-confidence, and then obtain a satisfactory result. Choose foods with high sugar and low fat before exercise, such as rice, noodles and fruits, which are easy to digest and can provide sugar. Considering that the physical education examination in the senior high school entrance examination lasts for a long time, it is necessary to supplement some dairy products or bean products and slowly digest them into sugars, which can provide energy for muscles for a long time. Meal time is also a problem that cannot be ignored. Generally speaking, eat a small amount of breakfast 90 to 120 minutes before exercise, such as bread or fruit with jam. Avoid eating foods containing too much fat, such as steamed buns and hamburgers. These foods are not easy to digest, will stay in the stomach for a long time, and cannot provide enough sugar. If you are used to eating a big breakfast, you need to eat it 2 to 3 hours before exercise, which is enough time for digestion. If you can't get up early, you can also choose a sports drink or a piece of bread 10 to supplement the sugar consumed the night before 30 minutes before exercise. Another thing to remind everyone is not to eat chocolate before the exam. Chocolate is a high-energy food, but it takes a long time to digest, which increases the burden on the gastrointestinal tract and causes mental depression. In short, no food or any eating time can be suitable for everyone, and we need to experience it ourselves in practice to find out the most suitable and effective food and eating time. It's best not to try the food you haven't eaten during the exam, so as not to cause unnecessary negative effects.