PATHOLOGY

Detailed explanation-1: -Air comes into your body. Air first enters your body through your nose or mouth, which moistens and warms the air since cold, dry air can irritate your lungs. The air then travels past your voice box and down your windpipe.

Detailed explanation-2: -There are two air passageways to your lungs-your mouth, and your nose-and healthy people use both to breathe. During strenuous exercise, you may breathe through your mouth to help oxygen get to your muscles faster, but consistent mouth breathing (particularly when sleeping) can lead to various health issues.