Tags: Always tired, Always Yawning, Animals, asapscience, autism, Awareness, brain, Brain Activity, Brain temperature, breath, breathing, Can't sleep, cartoon, contagious, Cool brain, Copy yawn, drawing, Exhausted, Exhaustion, genetics, hands, insomnia, learning, lungs, Mirror Neuron, neurons, oxygen, science, sleep, Sleep deprivation, Sleeping, Stop motion, temperature, Tired, Whiteboard, Why is yawning contagious?, Yawn, Yawn-O-Meter, Yawning
Why Do We Yawn?
