2. beauty beauty: Milk is rich in protein and trace elements, which has a certain effect on skin whitening, skin elasticity and skin luster.
3, calcium supplementation: milk contains a lot of calcium, and evening is the best time for calcium absorption. Drinking milk helps the elderly to supplement calcium and help the teenagers grow up. But it is best not to drink too much or too late, so as not to increase the burden on the gastrointestinal tract, and pay attention to oral hygiene.