4 years ago

Why do we yawn? random questions

2 answers:

6 0

We usually yawn when we are tired or drowsy. Sometimes we yawn to wake ourselves up. "The motion helps stretch the lungs and their tissues, and it allows the body to flex its muscles and joints.", This is taken from heathline.com. I would go there to do some more research on this topic.

IRINA_888 [86]4 years ago

4 0

Answer:

we yawn so that we can get more oxygen into the blood and move more carbon dioxide out of the blood

i dont know much so thats all i know

hope this helped

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