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What makes us yawn and why does it seem to be contagious?
Why is it that when I yawn, everyone around me yawns too? Am I so boring that I put even myself to sleep? ... A part of your brain called the brain stem detected this and triggered the yawn reflex.
To my knowledge we don't yawn in our sleep but then that makes sense because we don't have the stimulation to our brains that we do when we are awake.
Not all yawns are created equal, you will know a good yawn as it usually makes the eyes water a little bit with perhaps a tear, or causes the upper muscles of the chest to quiver.
There's a good chance your yawn will be contagious. In fact, before you even finish reading this story it is likely that you'll yawn at least once.
I hope reading this page is not boring, but you may find that just thinking and reading about yawning makes you yawn. ... What Makes Us Yawn - from How Stuff Works
Self-awareness makes some yawn-susceptible.
This would have been particularly helpful if the person yawning really was tired and about to nod of making him or her very vulnerable, the dramatic wide mouthed, tooth bared yawn would hopefully put ...
Question #56557. kells40 asks: What makes us yawn and why when we do, do other people start yawning too?
What makes us yawn and why does it seem to be contagious?
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