Why is yawning so contagious, and why so fulfilling after you do?!

Question: I just thought that and yawned.
After I yawn my lungs feel clean almost, it's hard to explain.
Why?

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Answers: I just thought that and yawned.
After I yawn my lungs feel clean almost, it's hard to explain.
Why?

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yawning is done to get more air into your lungs, it also is ment to give you energy which is y (yawn) people do it when they see or hear others

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it means youre gay

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When you see other people yawn your brain has the idea that it wants to do it too so it dose! And the reason why it feels so refreshing after you yawn is because it fills your lungs with more oxygen!

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