|
|
This is only a preview of the paper
Click here to register and get the full text.
Existing members click here to login
|
|
|
I) Why I chose this topic…
The act of yawning and why humans and animals alike do it has always been a mystery to me. ... These are the two most common times I catch myself yawning (9). ... I also realized that when I try to resist opening my mouth while yawning, my mouth muscles tighten up (9).
Just anyone else before beginning to research a topic, I have my own ideas of yawning. ... I began by simply typing in the word “yawning” into a search engine on the internet. ...
I decided to find just some simple, known facts on yawning. ...
The second theory is that yawning began with our ancestors as a way of communicating with each other or as a way to intimidate enemies by showing their teeth (8). ... Type two is only at night and consists of just yawning(7). ... The part of the brain that causes this yawning is the hypothalamus (1). ...
Another interesting thing I found was about excessive yawning. ...
During the entire search, I found some very interesting and somewhat entertaining facts on yawning. ...
The first one I found was, “Yawning according to the Quran. ... There were specific rules abut yawning, such as this one, “If one of you yawns, he should try to restrain if with the help of his hand since it is the Satan that enters therein (2). ... Since no one knows the truth, I agree with the scientists’ theory that yawning is cause by an “involuntary respiratory reflex which regulates the carbon dioxide and oxygen levels in the blood (5).
Approximate Word count = 1799
Approximate Pages = 7.2
(250 words per page double spaced)
|
|
|
|
|
|