Yoga promotes breathing through the nose and both inhalation and exhalation. The nasal passages filter, warm, and humidify the air, removing some of the pollen and pollutants you’ve inhaled before they get to your lungs. Mouth breathing dries out your mouth and may contribute to a misaligned bite, bad breath, and other problems including snoring and sleep apnea. Because the nasal passages are narrower than the mouth, the air tends to flow slowly – slowing the breath, calming the nervous system and the mind. (Source: Timothy McCall, M.D.)
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