Milk contains very high nutritional value, and it is usually best to drink it at breakfast time and before bedtime, depending on your needs. Generally speaking, drinking milk in the morning is better for health, especially for young children, which can provide rich calcium and other trace elements to promote growth and development. If you are a working person who is physically and mentally exhausted, you can drink a glass of milk in the afternoon to replenish your strength and reduce your hunger. If the body has gone through a huge trauma or surgery, resulting in weakness, you can drink more milk every day appropriately to help the body recover. If the quality of sleep is poor, you can drink a glass of warm milk about half an hour before going to bed at night to help you sleep. Although milk is very nutritious, it cannot completely replace diet. It is recommended to drink milk appropriately on the basis of regular diet to be healthy and nutritious. In addition, if there is lactose intolerance, you should avoid drinking milk on an empty stomach.