WHY WE YAWN
BY MS. BAKER
INSPIRED BY SAM H'S
BLOG POST
MISSBAKERS
BIOLOGYCLASS.COM
WHAT MAKES
PEOPLE YAWN?
MAYBE THEY'RE BORED.
MAYBE THEY HAVE TOO MUCH CO2 AND NEED TO LET IT OUT.
MAYBE YAWNING USED TO HAVE A PURPOSE A LONG TIME AGO.
(YAWN)
WHAT DO YOU THINK?
THE END
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