Dogs yawn as well, and it doesn’t only mean that they are tired, more like “I try my hardest to stay concentrated, but is really hard right now”

Why the heck is yawning contagious? I would expect such a feature to evolve if it served a purpose like, say, warning of something coming. See someone give a warning call, pass it on to the rest of the tribe. But why should a sleepy signal do that? Was there a sleep illness people had to worry about catching? Maybe it evolved to signal to everyone that it's nighttime. How many species is yawning contagious for? I'm picturing lions for some reason. I have a feeling the behaviour is common among mammals

You're not tired, but you saw a post about yawning? Well, guess what.

When a baby is crying on an airplane during takeoff or landing, I visibly and audibly yawn in front of them on purpose, so they catch the yawn and pop their ears.

Wtf

Just reading this made me yawn.

Apparently there isn't much consensus on what the actual reason(s) are for yawning. Apparently fish yawn though, so that's cool.

https://en.wikipedia.org/wiki/Yawn

What's that? You're not tired and you haven't seen anyone open their mouth big, but you read about a hypothetical person opening their mouth big? Bad news...

You read the word Yawn several times in a meme, guess what

I've yawned three times already reading through all these comments.

You saw an animal open their mouth big? Have fun.

Co2

You hit the gym and are having a good session, guess what

This post literally made me yawn. Not because it's bad either.

Snake yawns are the most cute of yawns and I will fight every one who says otherwise.

My idea is that yawing helps sync our internal clocks. So, we sleep at the same time, and wake up at the same time. That way, no one is left behind when the group starts moving to the next waterhole, or feeding ground.

A yawn is a signal to regain some alertness, so when you yawn in order to become more awake, it signals your fellow life forms they might want to be alert too. 🥱

What? You're hungry? Well, I'll just make you yawn

Didn't have to see anyone, I've done it twice just reading this post.

Edit: 3 times cause I was checking back.

Got to make everyone tired so they don't get you while you sleep.

🥱

You are all now breathing manually.

Yawning is more about getting more oxygen in your system. Which sometimes can be due to you being sleepy and not breathing as well as normal, but not always to do with tiredness.

I think when you see someone else yawn, you do the same to make sure you're just as on point as they are. Since more oxygen in your system means you'll operate more efficiently.

I think that's correct, anyway? If someone knows better, please correct me