Exercise can eat more fruits, eggs, lean meat and vegetables, and eat less oil. After strenuous exercise, don't drink Coca-Cola or chew chocolate candy (acidic food) when you are hungry and tired, which will aggravate the pain and fatigue. You should eat alkaline food instead. Generally, acidic foods contain more nonmetallic elements such as nitrogen, sulfur and phosphorus, while alkaline foods contain more metallic elements such as sodium, potassium, calcium and magnesium. Both sour and acidic foods, such as vinegar, oranges, plums, apricots and other fruits are also sour, but they are all typical alkaline foods. Another example is animal meat such as cereals, sweets, cakes, fish and pork, which are all acidic foods. Among animal foods, only milk and animal blood are alkaline foods, and others are acidic foods. For drinks, it is best to drink milk, soybean milk, tea, fruit juice (without sugar), mineral water or boiled water. Whether it is better to drink salt water or sugar water after exercise should be flexibly grasped according to the specific situation. In the case of sweating more, you should drink some light salt water properly. For example, when engaging in strenuous exercise in summer. Exercise under the conditions of not too much intensity, not too long time and not too high ambient temperature will generate less heat in the body and will not produce a lot of perspiration and inorganic salt loss. Neither salt water nor sugar water is needed at this time. Long-term exercise, such as running a marathon and riding a bike for a long distance, consumes a lot of energy in the body, so drink some sugar water or sugar salt water properly. As for general physical exercise, there is no need to drink sugar water. As for food, tofu, dried tofu and all kinds of bean products, as well as fresh fruits, melons and fruits and all kinds of vegetables are most suitable for eating after work and exercise. These are all good alkaline foods. Kelp is called "the crown of alkaline food". In addition, stir-fry sesame seeds and soybeans, add ginger and a little salt, and brew with boiling water to quench your thirst. Sesame, soybean and ginger are all good alkaline foods, which are also very beneficial to reduce the acidity in the blood and eliminate post-meal fatigue.