You're not tired, but you saw a post about yawning? Well, guess what.
this post was submitted on 19 Nov 2025
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You are now yawning manually.
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.
that is genius
You're supposed to stay in your seat during take off and landing. Please, remain in your seat. Why do you keep getting out of your seat and silently scream at the babies?!
Who says you have to get out of your seat?
How to tell if your baby is a sociopath with this one simple trick. For this trick you'll need: a baby, a stranger, an airplane, and the power to suspend all critical thinking.
Wtf
Just reading this made me yawn.
same! what is this WITCHERY!?1
oh gods dammit fuck aaaaall y'aaaaaall.
Yawn
Apparently there isn't much consensus on what the actual reason(s) are for yawning. Apparently fish yawn though, so that's cool.
Isn't it a social signal, apebrain talking?
Solitary animals yawn too. Don't if they can catch yawns, or how to test it.
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It seems like it helps the brain switch modes (from low activity to high and from high activity to low). So yawning could help prepare the brain to pay attention to something important, as well as wind down for the evening. Hence both morning and evening yawns.
The contagious aspect could be as simple as "Oh, you're changing modes? I should get ready to do the same."
Are there any other involuntary social signals?
….erections?
I do prefer to let my erection do the talking.
^ -me to the police officer who pulled me over and asked if I knew how fast I was going.
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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...
Luckily I managed to cover my yawn but keeping my lips/teeth together but opened up the inside of my mouth. Think I got away with it.
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You read the word Yawn several times in a meme, guess what
Literally just yawned reading this meme, lol.
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I've yawned three times already reading through all these comments.
It's early morning for me, it's not fair.
You saw an animal open their mouth big? Have fun.
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.
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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.
You hit the gym and are having a good session, guess what
This. I have started to wonder if yawns are actually a way to wake up. We know little about them. Some brain scans showed that we refresh the blood around our brain, like changing the water in a fish bowl.
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Co2
Isn’t the leading theory that yawning is more about cooling down the brain temp rather than a lack of oxygen or buildup of CO2?
Yeah, you are correct. There are several reasons. :)
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Didn't have to see anyone, I've done it twice just reading this post.
Edit: 3 times cause I was checking back.
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. 🥱
Got to make everyone tired so they don't get you while you sleep.
What? You're hungry? Well, I'll just make you yawn
I saw someone recently yawn at a zoom meeting, and I thought "rule."
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
Sounds like a plausible theory. I wonder how extensively it's been studied. I'd like to know if it's unique to humans. Figuring out which species do it would give a clue to when it evolved
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