Yawning is a normal human reflex, but scientists are still not sure why it happens. Some people find that their eyes water when they yawn. This may be due to pressure on the tear glands or eye ...

It’s getting late, and I keep yawning—which, for some reason, leads to my eyes tearing up. Out of the corner of her eye, she sees me wipe away those tears and asks if I’m okay.

Your eyes are more prone to watering when you lie down since gravity can’t guide fluid toward your tear ducts. Here's why, and what you can do about it.