1. Ensure the supply of carbohydrates: Candidates need to do intense mental work during the examination. Although the intensity is not as good as that of manual work, because 90% of the heat energy in brain tissue is supplied by decomposed glucose, and glycogen stored in brain cells is only a few minutes, a lot of energy depends on the oxidation of glucose transported by blood, so carbohydrates are an economical and convenient source of heat energy for mental workers. Candidates should eat an appropriate amount of staple food (rice, pasta) for three meals a day. Don't think that the staple food has no nutrition, only big fish and big meat have nutrition. For example, breakfast with bread, biscuits, snacks, porridge and pasta patterns, lunch and dinner with rice, noodles and various pasta patterns. You can bring your own cold boiled water with sugar to drink during the exam.

2. Ensure the supply of protein and fat: Amino acids in brain cells are precursors for synthesizing nerve mediators catecholamine and serotonin. Malnutrition in protein will reduce the quality of brain protein, and the lack of individual amino acids will also affect the function of nervous system. For example, when lysine is deficient, nervous system dysfunction and disorder can occur. Therefore, candidates should supply sufficient protein and essential amino acids. Soybean protein has high lysine content, which is of special significance to brain nutrition. Animal proteins such as eggs, milk and fish have high biological value and are easy to use, so they should be given priority. For example, candidates can have some milk, eggs, soybean milk, tofu, tofu brain and so on. Breakfast includes steamed live fish, beef sauce, stewed chicken with mushrooms, crispy tofu and so on. For lunch and dinner, they should try to stir-fry with vegetable oil, because vegetable oil contains more essential fatty acids that are very beneficial to brain cells, but the dosage should not be too much, because the diet should be light in hot summer during the exam.

3. Ensure the supply of vitamins and inorganic salts: Vitamin A, vitamin B and folic acid are closely related to maintaining normal. Inorganic salts such as zinc, iron and iodine also play an important role in brain memory, central nervous system excitability and brain oxygen supply. Egg yolk, animal viscera and vegetables are good sources of vitamins and inorganic salts. Therefore, during the examination, candidates had better eat an egg for breakfast, such as boiled eggs, steamed egg soup or lying eggs, and eat some pork liver with sauce, salted pork liver, fried rapeseed with mushrooms, celery, fried spinach with fungus, pickled cabbage and fried wild vegetables with green beans for lunch and dinner.

4. Nutrition should be comprehensive: In addition to the above three points, we should also pay attention to the comprehensiveness of nutrition when reviewing the diet arrangements during the exam. In other words, the daily diet should not only ensure a certain amount of various staple foods, but also be accompanied by rich non-staple foods. In particular, be careful not to eat something that has not been eaten before in order to strengthen nutrition, such as some seafood, or pineapples and mangoes that are easy to cause some people's allergies, in case of accidents. In addition, candidates who seldom eat food from protein should not suddenly add too much food from protein a few days before the exam. Doing so will hinder your metabolism and is not conducive to improvisation. In addition, we should pay attention to food hygiene to prevent the occurrence of gastrointestinal infectious diseases.