because a yawn is caused by lack of oxygen to the brain and if you see someone yawn your brain thinks there is low oxygen to it so therefore it makes you yawn also.
Because our brain is interested on it, being it is a scientific sycological Relaxation
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because a yawn is caused by lack of oxygen to the brain and if you see someone yawn your brain thinks there is low oxygen to it so therefore it makes you yawn also.
Because our brain is interested on it, being it is a scientific sycological
Relaxation
Post a Comment