– why do we yawn after seeing someone else yawn?

Question

– why do we yawn after seeing someone else yawn?

In: Biology

Answer 1

Multiple theories –

One of the latest ones (my favorite) is that since before primates, all animals used evolutionary signals to warn each other of any danger…
So essentially when someone yawns, its giving signals to our brain of some sort of danger or prewarning our 6th sense to take actions, like sleep.