16 years old This is a good time to drink milk. There is absolutely no harm in drinking milk for a long time. There will be many benefits, which will help you grow taller, supplement calcium, protein and vitamins, enhance your resistance and whiten your skin. Two bottles a day is the best (250 ml bottle). Drink it in the morning and evening, preferably half an hour after meals. What those so-called drinking milk will do is purely a rumor and a fallacy. I just want to say that rumors stop at the wise. Breast milk is the most resistant milk source in the world, and milk is second only to breast milk.