This article made me yawn. :)

> yawning is not simply an intensified breath but a distinct cardiorespiratory manoeuvre that reorganizes neurofluid flow

Brilliant, I'll use that next time I yawn somewhere inappropriately.

"To tire, perchance to yawn."

I did not read the article. But my question is - does it mean yawning (like trying to yawn on purpose which in my case will make me "really" yawn soon) influences those fluids inside my brain?

Or - a change in those fluids makes me yawn?

Why do I yawn more when I'm cold?

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