Milk is a healthy source of nutrients that a human body requires. But drinking milk just before you go to bed is probably not a good idea.
The problem with drinking milk at night is the presence of lactose. The lactose content is proven to keep people up at night due to digestive problems. Apart from this, lactose also has high sugar content. This presence of sugar in our blood stream can wake you up in the middle of the night as the brain gets starved for more energy.