Some time ago, the temperature dropped sharply. Many friends caught a cold. All kinds of sneezing and sneezing were continuous. In fact, it is not only people with colds or allergic rhinitis who have nasal mucus, everyone is constantly producing nasal mucus every day. The truth about nasal mucus Under normal circumstances, the nasal cavity of the human body secretes about 1,000 mL of liquid every day, of which about 700 mL evaporates and moistens the air in the nasal cavity, and another 300 mL collects on the surface of the mucosa to form a thin [mucus blanket] to protect the mucosa, prevent dryness, and adhere to foreign bodies such as bacteria and dust inhaled in the air. A lot Read More …