Question

Why do we need to take deep breath before we sneeze ?

Answer 1

Sneezing is a mechanism your body uses to clear the nose. When foreign matter such as dirt, pollen, smoke, or dust enters the nostrils, the nose may become irritated or tickled. When this happens, your body does what it needs to do to clear the nose — it causes a sneeze.

Some sort of irritation in the nostrils initiates a sneeze, and when the nerve endings pick up on that irritation, they relay a message to your brain to rid your body of the irritating substance.The brain signals the lungs to inhale deeply to get the force to push out the invaders. As you take in a very deep breath, your chest muscles, abdominal muscles, diaphragm, and muscles in the back of your throat tighten, increasing the pressure in your lungs. This pressure is needed to create enough force and air needed to expel the foreign particles.

This momentary build-up causes your eyes to close and tongue to press on the roof of your mouth in anticipation.As pressure increases, your blood can slow, and your heart may even skip a beat..As soon as enough pressure has built up with a lungful of air, your throat muscles quickly relax, and your body sends the air out rapidly