Why do we yawn?i know the answer do you know?
We yawn to get more oxygen to our brain. This is caused by the brain when we need to focus. It is contagious because it's an animal "signal" to the rest of the "herd" that we need to focus more.P.S. This is not a website to quiz others- it is for asking questions you do not know the answer to or being considerate by asking them to the best of your ability.
Because we're sleepy?
Because we saw someone else do it and it looked like a good idea.
reading this made me yawn
If you know the answer, then why are you asking the question?