Why do we tawn ? And whats its purpose?

Question

We do, dogs do it ,cats do it ,i think all animals do it but WHY?

Answer 1

yes what is a tawn

Answer 2

If by tawn you mean not use spell check its because were lazy but I've never heard of animals using spell check. Maybe that's why all my dog's notes are spelled wierd.

Answer 3

To get more oxygen into your lungs, although most people will say it's because you're tired. When I passed out once before from not eating/drinking enough that day, right before that I yawned tonnes as my vision began to blur and then I collapsed. I'd had a good nights sleep the night before so it couldn't have been because I was tired.

Answer 4

I assume you mean yawn.....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

Answer 5

It is quite simple really. The brain is seeking more oxygen. Yawning supplements normal respiration to give a bit of a boost.

Answer 6

ITs been said because of lack of oxygen in the blood, which may because of little sleep.

However no1 knows why it is contagious! Try it, when your walking down the streets and your 100% sure someone is looking at you yawn... See if they yawn as well, but make it look REAL

Answer 7

Presuming you mean yawn - it is when there isn't enough oxygen in the body so a yawn is the quickest way of drawing it in.

Answer 8

If you said Yawn, someone might answer.

It was answered last night anyway, and im sure it will be answered if you google it.

Answer 9

WHATS TAWN?