Watery eyes?

[warning, post not to be read when you are sleepy. Words might eat you up.]

Still remember the yawn invasion post on yawning?
Does it still do magic when you read it?
We bet the pictures will still be doing their magical mystical touch on you readers!
We bet you yawned! /teehee!/
Now this is one aftermath post on that yawning post.
Wait, we all do love to yawn, don't we?

Q : Why do we have watery eyes when we yawn?
A : (the simple version) When you yawn, you squeeze and your eyes shut which causes the lacrimal gland to push tears out.
Very simple and direct. It's the answer from kgb.

A : (the short version) Yawning squeezes the lacrimal duct, causing tears to flow and it squashes closed the tear duct that drain the tear film.
Short enough? It's the answer from chacha.com.

A : (the long version) When people yawn, they tend to tightly shut their eyes, and this does two things. First it squeezes the lacrimal duct, causing more tears to flow into the eye. Secondly it squashes closed the tear ducts that drain the tear film from the surface of the eye. As a result there are more tears in the eye and nowhere for them to go. So when your yawn ends and you open your eyes again they are watery.
Long and confusing, no? It's the answer from thenakedscientist.com.

Okay, we think that is enough answers for one question.
Better not go on too long, in case you might fall asleep later due to sleepiness and boredom.

During our research session, we even come across people asking whether watery eyes during yawning is normal or not.
You tell us?
Of course it is normal. Don't think too much.
Why is it normal, you asked?
Part of the reason is that when you yawn, you squeeze you eyes tightly shut. The way that tears flow is that they come out of you lacrimal gland which is on the upper outer side of the top of your eye. They then flow in a film across your eye obliquely downwards and inwards. The tiny black dot on your lower eyelid is called a punctum, and that's where your tear duct starts. If you squeeze your eyelids tightly shut, you stop the tears flowing across your eye and into the tear duct and so they have to come out. This makes you cry a little bit, which is why tears come out when you yawn.
This is from thenakedscientist.com.

Okay, enough explanation for one day.
We are sleepy enough to drag on, spare us?
Since one of our laptop is in ICU now, don't really have the mood to do food post.
So, nah, funfact post for you guys. Food post resuming when the laptop is declared healthy by all those technician-doctors.
Have fun yawning your way off. Ciao.