Science, asked by varsaikasm, 1 year ago

Why do we yawn while we feel sleepy?

Answers

Answered by Fuschia

2

When there is low oxygen level in the hypothalamus of the brain then to draw up more oxygen we yawn

SARDARshubham: but why only when we feel sleepy

SARDARshubham: hmm......yup.....! thanx

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