For centuries, all sorts of explanations have come up about why  do we yawn, hiccup and get goosebumps ? Centuries ago, people claimed hiccups meant a growth spurt for children, that you should cover your mouth during a yawn to prevent your soul from leaving the body, and that goosebumps make your hair grow faster.

It is true that most people in the modern world have nothing to with such beliefs but people still don’t know for sure why such things happen.

1. How and why goosebumps happen  ?

How and why goosebumps happen  ?
How and why goosebumps happen ?

Goosebumps – everybody gets them. When you’re cold, afraid, shocked, anxious or even inspired, goosebumps can suddenly pop up all over the skin. There is a proper scientific explanation to it also. “Goosebumps occur when the tiny muscle located at the base of each hair follicle contracts, causing the hair to stand on end. These goosebumps, or piloerections, have no beneficial function in humans,” says Daniel Neides, MD.

However, in the case of furry animals, goosebumps help create warmth against a cold environment.

They also appear during a fight-or-flight situation. What does science have to say about animals’ goosebumps? “In the animal model, hair standing on end creates insulation against the cold. Additionally, when an animal finds itself in danger, the raised fur coat creates a visual of a bigger animal and may scare off predators,” Dr. Neides says. Humans don’t have enough body hair for goosebumps to have any insulating effect. And goosebumps won’t scare off any would-be predators, either.

2. The real facts about hiccups?

The real facts about hiccups?
The real facts about hiccups?

Most people have certainly been bothered by the uncomfortable, sometimes quite noisy condition known as hiccups. There is certainly a very scientific explanation.  “When the diaphragm — a muscle situated between the lungs and the stomach — becomes irritated, it begins to spasm. This spasm causes what is commonly known as hiccups,” explains Dr. Neides.

It occur because of a disturbance in the nerve pathways that lead from the brain to the diaphragm, explaining why they sometimes occur during emotional situations or temperature changes.It begin after you swallow too much air, eat too quickly or too much, or experience excitement or anxiety.“It are usually short lived. Persistent hiccups, lasting for several days or more, may indicate the presence of a medical issue that needs attention,” warns Dr. Neides. “Sometimes certain diseases or even a medical procedure, especially those involving anesthesia, can cause prolonged bouts of hiccups,” he adds.

You’ve probably heard about numerous remedies for curing hiccups, but none of these has any scientific basis, according to Dr. Neides.

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4. Learn the truth of why you yawn?

Learn the truth of why you yawn?
Learn the truth of why you yawn?

People yawn for a variety of reasons.

You may yawn when you feel sleepy, bored or when someone around you yawns. Sometimes a yawn comes on for no apparent reason at all. Many people have heard the theory that people yawn because the brain needs more oxygen. This simply isn’t true.

“A new study reports that yawning is a mechanism involved in thermoregulation of the brain,” Dr. Neides says. The researchers found yawns are preceded by increases in brain temperature. “Just like your computer has its own cooling mechanism to keep it from overheating, your body’s computer, the brain, uses yawning to regulate its temperature,” he says.


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