Breathing through your nose does more than just help you smell the roses! Breathing through your nose has many health benefits, while breathing through your mouth has potential negatives.
In fact, some researchers believe that mouth breathing is associated with hyperventilation and causes or exacerbates asthma, high blood pressure, heart disease, and many other medical problems.
The nostrils and sinuses filter and warm the air going into the lungs. The mouth-breather bypasses this.
Because the nostrils are smaller than the mouth, air exhaled through the nose creates back pressure when one exhales. It slows the air escape, so the lungs have more time to extract oxygen from them. When there is proper oxygen carbon dioxide exchange, the blood will maintain a balanced pH. If carbon dioxide is lost too quickly, as in mouth breathing, oxygen absorption is decreased. If you mouth breathe during the day, it is likely that you will mouth breathe at night. Mouth breathing during sleep predisposes you to loud snoring and irregular breathing and can lead to a serious condition called sleep apnoea and heart conditions.
