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Friday, August 3, 2018

why do we yawn

Have you ever watched unhelpful video? Today i am going to be talking about a really useful  video.  

Have you ever wonder why we yawn? Well we yawn because we are tired or lazy and ti can happen when your brain is warm or hot.


have you wondered why we yawn? OK if you are sleepy or warm cool air you yawn and you can yawn when your brain is warm.


1 comment:

  1. Bula zion,
    I like how you told me what can cause a yawn and why. It reminds me of when I am sitting in my hot room and getting a headache. Maybe next time you can introduce what you are going to be talking about. Maybe you can add a ending like blog you later, something like that.

    By Mandita

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