You can drink milk at night. Milk is rich in high-quality protein, protein can promote muscle growth, and protein can promote the synthesis of various antibodies in the body, protein is the essence of life, is a very important component of the human body. Milk is rich in calcium, calcium can promote the reconstruction of bones, enhance the health of bones, and calcium ions in the human body plays a number of roles, it can stabilize the function of the nervous system, when the lack of calcium ions, especially when there is hypocalcemia, the phenomenon of neuromuscular excitability will be enhanced. Drinking milk at night can supplement protein on the one hand; on the other hand, it can replenish calcium ions and improve sleep.