Why don’t doctors recommend talking outside on frosty days?

Because during a conversation, the air is inhaled through the mouth, does not get warm and in a cold and dry form enters the respiratory tract, for this reason, various diseases can develop, for example, tonsillitis, bronchitis and even pneumonia. You should breathe through your nose, as your nose acts as a natural radiator and humidifier. Thanks to the good blood supply and unique structure, the air passing through the nose heats up to body temperature and is humidified up to 100%.