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lifehack:science_about_the_human_body

Introduction to Facts about Your Body

This article aims to educate you on the bio-mechanical machine that is your body. Facts, nutrition, needs, debunked urban myths, and more. Not all of this is scientific study, some of it is a best guess from scientists. This article shall be updated many times. Article started in Sept 2017.
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Your nose can remember 50,000 different scents.
Humans shed about 600,000 particles of skin every hour. Every day, the human body loses about one million skin cells — that amounts to 2 kilos every year. — health
An adult human being is made up of around 7,000,000,000,000,000,000,000,000,000 atoms. — factslides.com
A human baby has over 60 more bones than an adult. — factslides.com
There are 100,000 miles of blood vessels in an adult human body. — factslides.com
A tongue print is absolutely unique, and can be a form of identification. — springer
A single hair can hold the weight of a hanging apple. — theguardian
The number of bacteria in a person’s mouth is equal to the number of people living on Earth, or even more. — harvard.edu
Nails that are soft and brittle, with no moon, could indicate an overactive thyroid. — dailymail
The speed of an incoming brain impulse is about 400 km/h. — scienceline
There are 29 blood types, not just the common 4. The rarest belongs to the Bombay subtype, common for a small group of families in Japan. — ncbi
Over the course of just one day, our blood ’runs’ the distance of 19,312 kilometers. — howstuffworks
The total length of all the nerves in the human body is 75 kilometers. — Washington
A human makes approximately 20,000 breaths per day. — epa.gov
Almost all people in the world have special mites on their eyelashes called demodex. — microscopy-uk.org.uk
A human eye can distinguish up to 10 million different colors. But our brain can’t remember all of them. — color-theory-phenomena
Our ears grow throughout our lives, a quarter of a millimeter per year. — ncbi
The heart beats 35 million times a year. — rodgershealth
1 square centimeter of your skin contains around a hundred pain sensors. — hometrainingtools
Boys have fewer taste buds on the surface of their tongues than girls do. The tongue does not have seporate taste areas. — sciencedaily
The average person consumes about 35 tons of food during his or her life. — Teaching Ideas and Classroom Activities for Health Care
A human spends about five years of their life blinking. — makewav
100,000 chemical reactions occur every second in our brains. — The Hidden Spirituallity of Men
The speed of your sneeze is 160 km/h. — scienceline
Smiling triggers 17 muscles of the face; crying activates 43. — howstuffworks
Acid in your stomach doesn't eat through your stomach lining, because the stomach cells are renewed faster than they are destroyed. Over time, your stomach acid can disolve metal such as razor blades. — sciencedaily.com
The average human will shed 40 pounds of skin in their life. — sciencedaily.com
Human babies can only see in black and white when they are born. — sciencedaily.com
One of your hairs can last 3 to 7 years on your head. Only the root is alive, the hair is not. Fingernails aren't alive either. — sciencedaily.com
Your tongue tastes by liquid disolving your food. A dry tongue has no taste. — sciencedaily.com
By age sixty you will have lost half your taste buds. — sciencedaily.com
Your brain uses up about 20% of all your body's oxygen and calories. — sciencedaily.com
Apart from identical twins, every person on Earth has a unique smell. — sciencedaily.com
A higher IQ may be correlated with more dreams. — sciencedaily.com
You are about 1 cm shorter at night; the cartilage between your bones is compressed throughout the day. — sciencedaily.com
Your feet have half a million sweat glands that produce over a pint of fluid everyday. — sciencedaily.com
There are over 300 million capillaries in your lungs.; if you lay them out end to end they would reach across the United States. — sciencedaily.com
If you laid all of your blood vessels end to end they would stretch 60,000 miles, or around the world nearly two and a half times. — sciencedaily.com
Women blink twice as much as men. — sciencedaily.com
Men get hiccups twice as much as women. — sciencedaily.com
During your lifetime, you will produce enough saliva to fill two swimming pools. — sciencedaily.com
After eating too much, your hearing is less sharp. — sciencedaily.com
Your eye cornea is the only part of your body without a blood supply; it gets its oxygen directly from the air. — sciencedaily.com
75% of your body is water, and 80% of your brain is water. — sciencedaily.com
Aside from being flammable, human hair is exceedingly difficult to destroy even with strong acids. — sciencedaily.com
Organs bellow your bellybutton are much less vital for staying alive, and a human technically needs only one lung. — sciencedaily.com
A full bladder is about the size of a softball or baseball. — sciencedaily.com
Your teeth started growing 6 months before you were born. — sciencedaily.com
Most babies are born with blue eyes. Exposure to ultraviolet light (the sun) and melanin are what eventually bring out their true color. — sciencedaily.com
The largest cell in the human body is the female egg. The smallest cell in a human body is the male sperm cell. A woman’s egg is the only cell in the body that is visible to the naked eye. — sciencedaily.com
A human baby head is one-quarter total length of the body. By age 25, the head is one-eighth of total lenth of the body. Because the head grows slower than the body. — sciencedaily.com
It is estimated that the human body has about sixty thousand miles of blood vessels. — sciencedaily.com
Teeth are the only part of the human body that can’t repair themselves. — sciencedaily.com
Your eyes are always the same size from birth, but your nose and ears only stop growing at death. — sciencedaily.com
The brain operates on the same amount of power as a ten-watt lightbulb, even while you are sleeping. In fact, the brain is much more active at night than during the day. — sciencedaily.com
Your memory can be affected by body position. Where you are and how you are positioned in your environment can drastically trigger memory.
— sciencedaily.com
Adrenaline taxes your body to give you extra strength in emergencies and sports. — sciencedaily.com
Facial and inner-ear hair serves some purpose, but hair on the rest of the body generally serves zero purpose and can be removed. — sciencedaily.com
Earwax is necessary and serves as a shield for our ears, so don't be OCD about cleaning it out. — sciencedaily.com
Each brain neuron is unique, so you remember some kinds of information faster, and store some information better. — sciencedaily.com
The brain processes pain, but itself can not feel pain. — sciencedaily.com
Focusing muscles in your eyes move around 100,000 times a day. To give your leg muscles the same workout, you’d need to walk about fifty miles. — sciencedaily.com
Within half an hour the human body is capable of producing enough heat to boil a gallon of water. — sciencedaily.com
Humans are not the fastest or strongest animals, but they are the best long-distance runners by far. Some humans can outrun a much faster animal, because the human can endure running longer. — sciencedaily.com
An average adult human is made up of about seven octillion atoms. There are about 300 billion stars in our galaxy. — sciencedaily.com
When you blush, it's blood, and the lining of your stomach blushes too. — sciencedaily.com
Your skeleton keeps renewing itself every ten years, which means that every decade you get a new skeleton. — sciencedaily.com
The strongest muscle is the tongue, and the hardest bone is the jawbone. — sciencedaily.com
Sweat does not smell bad; skin bacteria feed on sweat, and bacteria waste has a bad odor.— sciencedaily.com
Inside your bellybutton is an ecosystem of thousands of bacteria. That's similar to a rainforrest. — sciencedaily.com
Humans are the only animal to produce emotional tears. Humans are almost the only animal to reproduce for enjoyment. — sciencedaily.com
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Cited Sources Feel free to Google facts you find interesting.
* Many matching facts here list their source link: https://brightside.me/inspiration-health/20-amazing-scientific-facts-about-the-human-body-that-we-never-knew-139455/

lifehack/science_about_the_human_body.txt · Last modified: 2017/09/18 04:36 by reb