Why is yawning so contagious?!
Every single time I see someone else yawn or even think of the word "yawn" I always have to yawn & it's really annoying & I believe it is contagious, I even yawned while typing this question! This is a serious question. Why must we yawn every time we see someone else yawn or even think about it? ThankYou! I'm also curious, did this question make you yawn??