Under normal circumstances, human blood is alkaline, but it is acidic when the brain is used excessively or the physical strength is exhausted. Therefore, if you prefer to eat acidic food for a long time, it will make your blood acidic, and your brain and nerve functions will easily deteriorate, causing memory loss. Foods containing phosphorus, chlorine and sulfur are all acidic foods, such as rice, noodles, fish, meat, duck eggs, peanuts and sugar. Regular consumption will acidify the blood; On the contrary, foods containing sodium, calcium and magnesium are alkaline foods. Kelp is the most alkaline, so you can eat more kelp. In addition, some dried fruits, such as cashews, walnuts and sprouts, are rich in protein, fat, vitamins A and E, and minerals such as calcium, phosphorus and iron, which are helpful to people's memory. Pay attention to food hygiene to prevent the occurrence of gastrointestinal infectious diseases.

Guiding opinions:

Eat more staple food before the exam. You can also eat more fruits, especially berries with more glucose, such as grapes and strawberries. If your appetite is too bad, you can take some multivitamin glucose properly. Ensuring adequate protein is good for physical and intellectual development. Usually, students need 70~80 grams of protein every day, which can be increased appropriately when reviewing exams. In protein, protein among animal foods, such as milk, eggs, fish and meat, is the best. Soy protein is also a high-quality protein, so eat more soy products.