Three best times. 1, after breakfast: milk is rich in nutrients such as protein, vitamins and calcium, and it is a kind of easy-to-digest beverage. Drinking milk in the morning can not only moisten the stomach, but also provide energy for the human body in time, so that people can meet the new day's work and study with abundant energy. 2. Before 4 o'clock in the afternoon: At 4 o'clock in the afternoon, because people have experienced nearly a day's work and study, the human body generally feels tired and sleepy. At this time, we need to supplement nutrients for the body most. 3, half an hour before going to sleep: people say that drinking milk helps sleep, mainly because the substances contained in milk can make people feel tired and sleepy. Furthermore, the trace caffeine contained in milk has a calming effect and can help people fall asleep quickly. In addition, because the calcium in the blood will drop after people fall asleep, if you drink some milk half an hour before going to sleep, it will help to replenish the calcium lost in the blood and maintain the calcium balance in the blood.