Why Do We Yawn?

By Spiral Education 26 Aug 17:45
Science AsapSCIENCE Yawn Yawning Tired Sleep Sleeping Sleep deprivation insomnia Can't Sleep Always Tired Always Yawning Whiteboard stop motion Hands Drawing Cartoon Contagious Autism Yawn-O-Meter Why is yawning contagious? Oxygen Lungs Brain Cool brain Temperature Brain temperature Exhaustion Exhausted Copy yawn Genetics Animals Mirror Neuron Neurons Learning Awareness Brain Activity Breath Breathing Display all tags
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