Why Is Yawning Contagious?

Why Do We Yawn?
Vsauce SHIRTS:
Other peeps in this video:
Charlie:
Alex:
Yawning to cool down your brain: /
and:
More on yawning and empathy here:
here:
and here (for the journal article):
Angry Mob play-set (no longer available):
PARAKEET YAWN:
BETTA FISH YAWN:
SNAKE YAWN:
"Why Are Yawns Contagious" "Why is yawning Contagious" "why do we yawn"
Music by Jake Chudnow:
intro animation by