Milk is rich in protein, calcium, and vitamin D, making it a nutritious beverage. Each cup of milk contains about 8 grams of protein, which helps maintain the health of tissues and organs. The calcium in milk is essential for strong bones and teeth, and it's crucial for preventing osteoporosis. Vitamin D in milk aids in calcium absorption. Drinking milk can also support cardiovascular health and reduce the risk of stroke and high blood pressure. Having a warm cup of milk at night can help with sleep because it contains tryptophan, which helps produce sleep-promoting chemicals. However, those who are lactose intolerant should be cautious, as the lactose in milk may cause digestive discomfort. Additionally, some studies suggest that the fat and hormones in milk may increase the risk of certain cancers. Overall, milk is an important source of nutrition in the daily diet, but it should be consumed in moderation based on individual health conditions.