Why is it so difficult to act like you are yawning?

53 views
0
2 Comments

I can tell if someone is actually yawning or they are acting out a yawn, i tried to act like i am yawning but it always seems fake and is difficult. Why?

In: 0

TopFlight2252 commented

Ok so I just tried this. I know my lip twitches when I’m actually yawning but I noticed it doesn’t when I fake it, so maybe the genuineness of the whole thing is purely muscular?
vance_mason commented

Mostly because yawning is involuntary and the face is so complex. There are 42 different muscles in the face, you use 11 to yawn, controlled by 6 of the 12 cranial nerves. Not all of these muscles are easy to engage on purpose, in the “correct” sequence. Kind of like how it’s hard to fake a smile convincingly without a lot of practice. Most people forget then eyes are involved in a genuine smile.