“@mashable: The science behind yawning will exhaust you http://on.mash.to/1kP0oxt ”
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@mashable My dog@howiebeane will yawn every time i tell him to. https://www.youtube.com/watch?v=zG9vEgITUOg …Thanks. Twitter will use this to make your timeline better. UndoUndo
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@mashable I actually yawned when I read this tweet. Interesting article - The Science Behing Yawning http://on.mash.to/1kP0oxtThanks. Twitter will use this to make your timeline better. UndoUndo
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