In the evening, many people like to drink dairy products to promote sleep, and many people like to drink fragrant or eat instant noodles to spend the night. It is best to choose fresh milk source for dairy products that promote sleep. If there is no condition, it is better to buy pure milk. Fragrant milk tea or milk tea drinks blended with some milk powder contain more pigment additives, lack of nutrients, and some contain irritating ingredients. Regular drinking at night can not only promote sleep, but also easily lead to obesity, so it is best not to drink it often.