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| Breathing through the nose is more scientific and hygienic than breathing through the mouth. (Image: biologydaily) |
Many people believe that both the nose and mouth can be used for breathing and that there is not much difference between the two. However, this viewpoint is incorrect. Breathing through the nose is scientifically justified, as the nostrils not only serve as passages for airflow, but also function to warm, humidify, and purify the air.
The nasal passages are rich in blood vessels, which have the ability to constrict and can self-regulate according to changes in the external environment. When cold air enters the nostrils, the blood flow in these small vessels increases, leading to a faster circulation rate. As a result, the air that enters the nostrils can be adjusted to a warmer temperature, matching that of the body. At the same time, it transforms dry air into moist air to maintain the normal physiological function of the respiratory system.
Additionally, the nasal passages are lined with numerous tiny hairs, known as cilia. When breathing through the nose, these cilia trap dust and impurities from the air. If dust and microorganisms enter the nostrils, the cilia and mucus play a crucial role in blocking them. The mucus in the nose also contains antibacterial agents that can bind to and destroy bacteria.
Therefore, breathing through the nose is more scientific and hygienic than using the mouth.
