THE TRUTH IS that we don’t completely understand why people, or animals for that matter, yawn.

It’s widely assumed that yawning occurs because we are tired or bored or because we see someone else doing it, but there isn’t any hard evidence to support these beliefs.

Scientists do not purport to know all of the biological mechanisms of the yawn, but tend to agree that a yawn is an involuntary respiratory reflex, which regulates the carbon dioxide and oxygen levels in the blood.

Technically, a yawn is the reflex opening of the mouth followed by the deep inhalation and slow exhalation of oxygen.

The very act of yawning is but one of a number of involuntary reflexes controlled by the spinal and nerve centers.

Scientists speculate that the onset of a yawn is triggered either by fatigue, or by sheer boredom as, at those times, breathing is shallow, and little oxygen is carried to the lungs by the oxygen-toting cardiovascular system.

When one yawns, his or her alertness is heightened, as the sudden intake of oxygen increases the heart rate, rids the lungs and the bloodstream of the carbon dioxide buildup, and forces oxygen through blood vessels in the brain, while restoring normal breathing and ventilating the lungs.

This quite plausible theory of yawning falls short of explaining many aspects of yawning. Scientists explain away the "contagious" nature of yawning, that is when one person's yawn triggers another nearby to yawn, as due to the power of suggestion, but are at a loss when attempting to explain why yawning occurs excessively in patients with lower brainstem damage or with multiple sclerosis.

Other unlocked mysteries include why fetuses in the womb yawn, when it is a well-known fact that they do not intake oxygen into their lungs until after live birth, or why individuals with high concentrations of oxygen in their blood streams yawn.

Until these questions are answered, do not assume that a person who yawns in your presence is bored with what you are saying, or suffers from exhaustion. Simply be pleased that he or she is not bored to death.

• HAPPY BIRTHDAY NABILAH! (sorry i was late today)
• HAPPY BIRTHDAY ALOY~
• HAPPY BIRTHDAY TO MY COUSIN GUANWEI!~
• Sleeping early.
• Study for science UT =(
• Coach say, my forehand is lousier than my backhand. hohoho. die die.
• THANK YOU NIC FOR YOU VERY NICE COOOOKIES!
• Time to master guitar hero. muhaha.

Gelare with Bday gal nabilah and frens later! ice cream. ice cream! ICE CREAM!!

SUNDAY is a sunny day! I brought over some tired-ness from ytd. Even thou i slept so much like a pig thru the night, i woke up feeling lethargic. (-_-) ok and i didnt have the moood for breakfast, so i went back to sleep. HAHA. ok woke up to have lunch. and oh my @#$%^&!! have to travel all the way to braddell to get new rubbers. zzz. its so expensive!! sigh. BUT nvm look on the bright side! i met up with nic, to have ice cream at ICEKIMO! wooohooo ice creammmm. took the train down to AMK and then a bus down to thomson road. sweeeet place for ice cream! you have hunks serving you, and cute gals studying there also. rofl. wa i tell you, nic plays DjMax! not bad leh! and she plays dota. which explains why she has IMBA and GODLIKE in her very profound vocabulary. After ice cream, we still had time, so we decided to follow where the wind would bring us to. kidding. we just walked down thomson road to thomson plaza, and sort of explored that place since i've nv been there. on the way we talked a lot of crap! lol. She talks a lot maybe? or maybe i talk alot? HAHAHA. we both talk a lot. ok saw Colin on the way there too. He's that mighty bowler. haha. ok all in all had a great day today, thank you nic for your company and your life stories, and for introducing me to a new place for ice cream, finally for letting me know, im not the only idiot around. (IM NOT AN IDIOT OK!) yeah finally got my new rubber, so, POL-ITE here i come!