As title says! Also, Is it really contagious, and if so, why?
In: Biology
Because it’s polite to yawn back.
The same way if you waved at someone and they don’t wave back, you’d feel offended.
Why do we yawn when we see someone else yawn?
Share & grow the world's knowledge!
As title says! Also, Is it really contagious, and if so, why?
In: Biology
Because it’s polite to yawn back.
The same way if you waved at someone and they don’t wave back, you’d feel offended.
Latest Answers