It is not recommended to drink yogurt when you have a cough, mainly because of the storage environment of yogurt. If yogurt is left at room temperature, its beneficial probiotics may soon be destroyed, which affects the nutritional value of yogurt. However, if you eat something cold when you have a cough, it will definitely stimulate your airway and make your cough worse. Most coughs are due to inflammation of the airway, which in Chinese medicine is a heat illness, so if you eat an icy thing with this heat illness, this hot and cold stimulus is unbearable to the airway, and it will trigger choking and coughing. If you have a cold cough, the cold phlegm is not easy to get out, so if you eat something cold, the cold phlegm will be aggravated, and the phlegm will not cough out well. Another thing is the taste of yogurt, because milk is very moistening to the lungs, while yogurt has a particularly sour taste due to the proliferation of lactic acid bacteria inside. When you have a cough, if you eat something with a strong taste, it will stimulate your airways, and if you eat something with a strong taste, you will need more water to neutralize the taste. When you have a cough, your airway needs water, so drinking yogurt is the same as competing with your body for water when your cough is not well, which makes it difficult to get well. Also, if you want to drink dairy products, drinking hot milk when you have a cough is especially moistening to the lungs and has a cough-relieving effect in itself.