What is a yawn and why do people always yawn? Yawning has fascinated people for hundreds of years, and many superstitions and myths have been created over the years. Thus, many people also not really know about the process of yawn and how it gonna be happen?? and now i can explain to you in details in my post...
Today science has discovered that a yawn is a reflex of inhalation and exhalation that draws more oxygen into the bloodstream in our body. A reflex is a built-in physical reaction that people often do not have control over. A yawn is often associated with a person being tired, but this is not always the cause for a yawn. People yawn for many reasons including stress, boredom, emotion and over-work.
Some of the more scientific explanations of why we yawn are caused by physical needs. One likely explanation is that the yawning reflex is triggered when our blood needs more oxygen. The deep breath helps replenish the levels of oxygen in our blood. Another common theory is that the yawn help regulate our body temperature. Other hypotheses suggest that the same chemicals in our brain that affect our moods and emotions cause us to yawn.
Today science has discovered that a yawn is a reflex of inhalation and exhalation that draws more oxygen into the bloodstream in our body. A reflex is a built-in physical reaction that people often do not have control over. A yawn is often associated with a person being tired, but this is not always the cause for a yawn. People yawn for many reasons including stress, boredom, emotion and over-work.
Have you noticed that yawning seems to be contagious? If one person yawns, this appears to cause another person to yawn. Researchers have found that 40-60% of people who see a picture of someone yawning will yawn themselves. Even reading the word YAWN can make people yawn.
Some of the more scientific explanations of why we yawn are caused by physical needs. One likely explanation is that the yawning reflex is triggered when our blood needs more oxygen. The deep breath helps replenish the levels of oxygen in our blood. Another common theory is that the yawn help regulate our body temperature. Other hypotheses suggest that the same chemicals in our brain that affect our moods and emotions cause us to yawn.
Therefore, next time if you see me yawning, is not i'm tired or bored, but I NEED MORE OXYGEN IN MY BODY...................
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