10 Absolutely Mind-Blowing Facts About The Human Body

10 Absolutely Mind-Blowing Facts About The Human Body

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Ever wondered how many times a human being blinks in a minute? Or how many times we inhale and exhale during the entire course of our lives? Our bodies are these amazing entities and sometimes taking care of it can feel like a chore. While there are minute imperfections, it is what makes us all unique and the processes occurring within our bodies makes us wonder how unique we truly are. While many of us know a lot about our bodies, I bet you didn’t know these 10 facts that will make you appreciate your body just a little bit more!

1. The cornea is the only part of the body with no blood supply. It gets its oxygen directly from the air.

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Image: Vanessa Bumbeers

The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber. The cornea provides most of an eye’s optical power and is also sensitive to touch, temperature and chemicals, which provides safety by causing involuntary reflex to close the eyelid. Not only that! The cornea is also the fastest healing tissue in the human body. According to Shoreline Vision, most corneal abrasions will heal within 24-36 hours.

2. Every day you breathe up to 30,000 times.

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Image: Olimpo Ávila Salazar

Breathing is something we automatically do and is vital for our survival. We inhale and exhale approximately 22,000 to 30,000 times a day based on our physical activities throughout the day.

3. 90% of illnesses are caused by stress.

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Image: Elisa Ventur

The human body is a complex piece of machinery and so is understanding the relationship between stress and illness. Numerous surveys however confirm that the average American is under much more stress than a decade or two ago. Studies also show that most doctors’ visits are related to stress in the body and that relaxing and properly managing stress plays a vital role in sustaining one’s happiness and health.

4. We have no sense of smell when we’re sleeping.

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Image: Miriam Alonso

While light, noise, and comfort can impact our sleep, a study conducted by New Brown University found that smell is something that will not wake us up. During the study, participants easily detected odors when awake and in the early transition into sleep, but, once asleep, did not.

5. From the moment we are live till the end, the human body goes from having 300 bones, to just 206.

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Image: Ron Lach

We are born with more cartilage (than bone), but as time goes by, it gradually turns into bone over a period of time through a process called endochondral ossification. As we grow older, many small bony segments fuse together to form a single bone. So, when we are born, we have about 90-95 bones more than an adult.

6. Your brain is most active when you are asleep.

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Image: Emmet

Studies show that there are fundamental differences in brain function during daytime and nighttime. While you are getting rest and dreaming, your brain is essentially revitalizing itself: it gets rid of toxins and stores important information. Not only that, your brain also prepares you for the next day both physically and mentally. So, try to get adequate sleep every night.

7. Our bodies give off a tiny amount of light that’s too weak for the eye to see.

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Image: Zac Durant

It’s not just the human body, but in fact, all living beings emit very weak light, which is thought to be a byproduct of biochemical reactions involving free radicals. Masaki Kobayashi from the Tohoku Institute of Technology managed to photograph the dim glow of humans using an incredibly sensitive camera, able to detect the dimmest of lights.

8. When you blush, the inside of your stomach does too.

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Image: Brandi Redd

Blushing happens when a surge of adrenaline caused by anxiety or embarrassment makes tiny blood vessels called capillaries widen all over your body, increasing blood flow. This is especially obvious in your cheeks but it turns out, it happens in your stomach lining as well. According to Santa Clara University, blushing is also a part of your body’s “fight-or-fight” mechanism.

9. The human heart beats more than three billion times in an average lifespan.

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Image: Ryan ‘O’ Niel

Your heart beats about 100,000 times in one day and about 35 million times in a year. During an average lifetime, the human heart will beat more than three billion times.

10. Human teeth are just as strong as shark teeth.

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Image: Lesly Juarez

Even though your teeth are largely composed of a mineral softer than that found in sharks, new tests reported in the Journal of Structural Biology suggest that they’re just as tough. A team of German scientists studied the teeth of the short-fin mako and tiger shark and discovered that they have similar tooth structures as us. While the enamel in human teeth is softer, consisting of the mineral hydroxyapatite, the overall strength of human teeth was on a par with that of the shark, the scientists found.

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