The attacks of colds and flu are associated with many annoying symptoms, including the nose that runs to the nose, where the mucous fluids come out permanently.
To understand the cause of this phenomenon, we must first know how the nose works. "The nose receives air, whatever its temperature, whether 0 or 100 degrees C. When we breathe, its temperature is high with the temperature of the body and the nose adjusts the humidity rate. heat and air of all the particles that it carries. "

"This occurs with the help of massive amounts of blood flow through the membranes of the nasal membranes.These membranes are very sensitive, respond to changes in temperature, interact with airborne particles, and modify significantly the blood flow in the nose. "

With these extreme changes in temperature, from hot to cold and vice versa, blood flow changes, which is associated with changes in the mucous flow of the nose.

As a result, fluid flow in cold weather increases because the nose is actually trying to moisten and heat the air, and uses the flow of blood and mucus to do the work.