+113 It is amazing how there are tons of papers about why we yawn and they all conclude that we don't have a clue. amirite?

by Anonymous 3 years ago

Isn't it to bring in more oxygen because of a signal from the brain sensing your current O2 levels?

by Anonymous 3 years ago

Oxygen levels remain stable in a healthy adult, over 90%. This would assume that when O2 level drops, it makes us yawn. This would also assume that heading the night O2 levels drop. None of the above are true, and people with hypoxia would yawn a lot, and so far, they just become stupid (and die)

by Anonymous 3 years ago

papers? huh?

by Anonymous 3 years ago

Yawning is a lack of penis in the mouth

by Anonymous 3 years ago

Does that go for animals who yawn too?

by Anonymous 3 years ago