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1. Why should we breathe only through our nose? |
Answer» <p>Ans :- The lungs actually extract oxygen from the air during exhalation, in addition to inhalation. Because thenostrilsare smaller than the mouth, air exhaledthroughthenosecreates a back flow of air (and oxygen) into the lungs. Our nostrilsand sinuses filter and warm/cool air as it entersourbodies.</p> | |