Biology, asked by Jiyatanna, 1 year ago

why do we yawn when we are tired

Answers

Answered by Saksham1199
3
we yawn when our brain is tired and when it is not getting propper supply of oxygen

Saksham1199: brainiest please
Answered by harshita88
3
we yawn when we are tired because the oxygen inside our body is over and to get more oxygen we yawn


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