We breathe through nose and mouth, but breathing through nose is useful. Breathing through nose makes the inhaled air pure and in accordance with the body temperature when it enters the body. Nose works as a filter. The short hair in the opening of the nose like a filter held the dust particles and germ in them. If any tiny particle does not get stuck in these tiny hair of the nose, it sticks to the inner side of the nose. In this way the nose hair purifies the air that goes to our lungs. We should clean our nose also while bathing. This results in protecting our body from many diseases. So, that’s why hair of nostrils are more advantageous.