15 Weird Facts About The Human Body
The human body does some amazing things, if you think about it. It can heal itself, regenerate itself and enables you to do just about anything you wish. But the human body also does some strange things that you may not even be aware of. Below are 15 weird and interesting facts about the human body that you may not know.
1.The body sheds more than one million skin cells a day.
Practically everyone knows that hair sheds daily, but did you know that your skin sheds daily as well? According to Discovery Health, humans lose about 30,00 to 40,000 skin cells per hour, totaling more than one million skin cells lost per day. Over a lifetime, a human will lose about 105 pounds of skin.
2. Millions of bacteria live on your body.
It sounds icky and gross, but it's true - approximately 32 million bacteria live on the human body. But don't start scrubbing yourself just yet. The majority of bacteria on your body is harmless and can even be beneficial. Certain types of bacteria on the skin can prevent disease and infection.
3. As you grow, you lose a few bones.
It may seem a bit backward, but babies actually have more bones than adults. That's because as you grow, some of your bones fuse together, reducing your bone count from 350 at the start of your life to 206 at the end of your life.
4. You (literally) grow overnight.
It's true: you really can grow overnight. But you'll only grow an extra 8 millimeters and you'll lose it the next day. That's because your body doesn't technically grow overnight, it relaxes. When you lie down, your spine decompresses, adding 8 millimeters to your height. But when you stand up, gravity takes hold and pushes down on your spine once again.
5. You can fill two pools with your saliva over a lifetime.
Each day, your salivary glands produce about 1.7 liters of saliva. Over the course of your lifetime, your salivary glands will produce about 25,000 quarts of saliva, which is enough to completely fill two swimming pools.
6. The tongue has its own unique print.
Just as everybody has their own unique set of fingerprints, every person's tongue has its own unique print as well.
7. Snores may really be deafening.
You may think your partner snores like a buzzsaw, but he or she might actually snore as loud as one. According to Discovery Health, the average snore reaches 60 decibels, which is the noise level of human speech. But some snores can reach 80 decibels, the same noise level as a pneumatic drill breaking concrete. Any noise reaching 85 decibels or higher is considered dangerous for the ear.
8. The stomach lining regenerates itself.
Every three to four days, the lining of the stomach will regenerate itself in order to withstand the harsh acids of the stomach.
9. The body contains more than 60,000 miles of blood vessels.
If you were to lay all of the blood vessels in your body end to end, they would equal 60,000 miles in length. Although that's a long way to travel, it only takes a blood cell 60 seconds to circulate through the entire body.
10. Blondes have more hair.
Studies show that hair color can determine the thickness of hair. Blondes have the most amount of hair follicles - about 146,000 - while the average person has around 100,000. People with black hair come in second with about 110,000 follicles followed by people with brown hair, who have close to 100,000. Redheads come in last with about 86,000 follicles.
11. Human bone is stronger than concrete.
Human bone can support as much weight as granite and four times the weight of concrete. A piece of bone the size of a matchbox can support up to nine tons of weight.
12. The fingernails you use most often grow faster.
That's right - the fingernails on the hand that you use the most grow the fastest as do the fingernails on the longest fingers. Fingernails grow about one-tenth of an inch per month on average.
13. The stomach can hold a surprising amount of food.
The stomach is elastic in nature and can stretch to hold more than four times its normal volume. Just think about all those competitive eaters out there, especially the ones that look to be about average in height and weight. By the way, this is not an excuse to binge or overeat.
14. The surface area of the small intestine can increase.
Villi, which are the small finger-like projections that line the intestinal wall, help to increase the surface area of the small intestine. Normally the small intestine covers half of a square meter, but villi can increase the small intestine to 250 square meters. This increase helps the small intestine absorb food better.
15. Laughter is good for the heart.
They say that laughter is the best medicine and it certainly is for your heart. Laughter gets the heart pumping and the blood flowing. In fact, laughing can increase the flow of blood by 20 percent. So if you want to keep your heart healthy, have a good giggle at some of the weird and wonderful things that your body does.