Fitness has become a hot topic today. Now many people who work out will ask:? A pathologist pointed out: only the body fluid is weakly alkaline can keep people healthy. People will feel muscle and joint pain and mental fatigue after exercise. The main reason is that sugar, fat and protein in the body are decomposed in large quantities, and lactic acid substances are produced in the process of decomposition, which makes people feel muscle and joint pain and mental fatigue. Therefore, at this time, we should eat more alkaline foods such as vegetables and fruits to balance the pH of body fluids. Human food can be acidic or alkaline. Acidic foods are often rich in protein, fat and sugar, which can lower the PH value in blood and body fluids. Fruits and vegetables are generally alkaline foods, which can prevent blood from becoming acidic. Alkaline fruits include apples, pears, bananas, peaches, strawberries, plums, plums, persimmons, grapes, citrus, grapefruit and lemons. Alkaline vegetables include beans, green flowers, broccoli, cabbage, carrot celery, cucumber, eggplant, chicory, garlic, leek, lettuce, onion, coriander, pepper, radish, potato, spinach and pumpkin. Garlic can cure threatened abortion, and dysmenorrhea can't be eaten.