yawning speech

in class we had to do a speech about the human body and then we had to share it in front of the class heres mine its about yawning


Yawning why do we yawn? and is it really contagious ? well if you want to find out listen and pay attention and you will ps you may yawn during my speech because if you think about it yawning is really contagious.

Why do we yawn? the reason we yawn is because we don't breath as hard as if you were exercising so we need more oxygen witch is why we yawn if were bored tiered or our temperature is higher or lower than normal it helps us bring more oxygen into our body and blood so mainly its like taking a big deep breath in.

Do animals yawn? and is it contagious? well animals do yawn but they don't just yawn when anyone yawns they yawn when there master or family yawns did you know that fish yawn you may think that they don't yawn because they breath in water but they do yawn fish yawn they breath in water and it cleans their gills. an interesting fact is that a dog set the world record for the longest yawn.

now is yawning contagious? yes it is if i came up to you and said the word yawn heaps some of you would yawn and if yawned then some of you would yawn and its not because your bored of my speech its because if someone says the word yawns or somene says the word yawn it makes you want to yawn  because there doing it. it is a true fact that if one person yawned over 50 percent would yawn.

if you want to stop yawning do a deep breath in