Question

explain why we yaun frequently

Answer 1

we do think that yawning is for sleeplessness but actually it is not it for a long breath. when we need a large amount of oxygen we just yawn. the scientific reason for yawing is when do not take long breath we automatically yawn.

Answer 2

Answer=When we are tired,our lungs and the rest of the respiratory system slows down until there is too little air in our lungs.Our body then sets off a spasm (a quick movement) in the muscles of our mouth.throat and chest.This forces us to take a deep breath of air (yawn) to take in more air.