During a cold, it is okay to drink milk because milk contains abundant proteins, various trace elements, and minerals that can supplement the body's nutrition, boost the immune system, and facilitate recovery from the cold. However, during a cold, it is advised not to drink cold milk but to drink warm milk instead, as gastrointestinal function is also weakened during a cold. Drinking cold milk might irritate the gastrointestinal tract, leading to symptoms such as abdominal pain, bloating, and diarrhea. Moreover, it is important not to drink excessive amounts of milk during a cold. Drinking a moderate amount of milk is acceptable, as too much milk can increase the burden on the gastrointestinal tract. Besides drinking milk, consuming fresh vegetables and fruits and drinking plenty of warm water can also help speed up recovery from a cold.