It is best to drink yogurt about two hours after dinner, do not drink yogurt on an empty stomach. Because the lactobacilli in yogurt on an empty stomach are easy to be killed by stomach acid, the health effects of yogurt will be weakened. Milk is a kind of indigestible drink, after drinking in the morning can be after a day of movement to promote its digestion in the stomach and intestines, after drinking in the evening, due to the amount of movement in the person after sleeping is greatly reduced and is not conducive to the human body to digest and absorb, gastrointestinal bad people may also be produced by the indigestion of the symptoms. Yogurt is different, it contains lactic acid to help human intestinal peristalsis at night, so drink at night not only does not lead to indigestion, but also help to prevent constipation.