1. Don’ts on an empty stomach: 1. It’s not good to drink milk on an empty stomach! Since water accounts for a large proportion of milk, drinking more milk on an empty stomach will dilute the gastric juice, which is not conducive to the digestion and absorption of food. In addition, intestinal peristalsis is very fast during fasting, and milk passes through the gastrointestinal tract very quickly, and its retention time is very short. Its nutrients often enter the large intestine in a hurry without being absorbed in time, and it is just a mere formality. Therefore, drinking milk on an empty stomach is not in line with nutritional hygiene. An ideal breakfast should be a protein-rich, high-calorie meal that is no less than the entire day's food intake. Therefore, it is best to drink milk before taking a nap or going to bed in the evening, which can eliminate the disadvantages and bring benefits and better play its role. If you are used to drinking milk for breakfast, you must eat some other food before drinking milk so that the milk can stay in the gastrointestinal tract for longer. If you want to drink a bottle of milk for breakfast, you can first eat 50 grams of rice or pasta, add an egg, a little pickles, and dried tofu, and then drink milk to mix the milk with other foods in the stomach and prolong the stay in the gastrointestinal tract. , which is conducive to the digestion and absorption of its nutrients. Since the calories provided by the food are sufficient and the digestion and absorption are slow and complete, the blood sugar level will remain high and you will be energetic in the morning. The milk can be heated, but not boiled. Because after boiling, some vitamins will be destroyed, and the calcium in the milk will form calcium phosphate precipitation, which affects the absorption of nutrients by the body. There is also a certain amount of knowledge involved in boiling milk. Most people will add milk to sugar and cook it over high heat. This will cause the lysine in the milk to react with the sugar under high temperature to produce fructosyl lysine. This substance will not It is not digested and absorbed by the human body, but it is harmful to human health. Therefore, you should wait until the milk is boiled before adding sugar when it is not hot to the touch. 2. Experts remind the public not to drink milk on an empty stomach. According to reports, many people drink milk early in the morning, thinking that this can fully absorb the nutrients. In fact, if you drink milk on an empty stomach, it will be quickly discharged into the large intestine through the stomach and small intestine. As a result, various nutrients will be excreted from the body before they can be digested and absorbed. The correct way should be to eat some food first and then drink milk. Excessive gastric acid causes protein denaturation and precipitation, making nutrients difficult to be absorbed by the gastrointestinal tract, leading to serious indigestion and diarrhea. Therefore, it should be eaten with some bread, biscuits, snacks and milk. It can be seen that the main reasons why it is not suitable to drink milk on an empty stomach are: first, it can easily cause diarrhea; second, the absorption efficiency is not high. Because it passes through the gastrointestinal tract too quickly. Try to drink milk at the end of a meal to facilitate absorption and improve tolerance. 2. Before going to bed: Drinking milk before going to bed is beneficial to the body's absorption and utilization of calcium. Most of the calcium taken in at dinner is absorbed and utilized by the body before going to bed. The level of calcium in the blood will gradually decrease after sleeping, especially after midnight at night. The decrease in blood calcium promotes hypersecretion of the parathyroid glands. The hormone acts on the bone tissue, causing part of the calcium salt in the bone tissue to dissolve into the blood. Maintain a stable balance of blood calcium. This dissolution is the body's self-regulatory function. Over time, it will become one of the causes of osteoporosis. Drink milk before going to bed at night. The calcium in the milk can be slowly absorbed by the blood. The blood calcium is replenished and balanced throughout the night. There is no need to dissolve the calcium in the bones, preventing bone loss and osteoporosis, so before going to bed Drinking milk is good.