As a species, humans tend to have a delicate appearance, however it is rather impressive how many big secrets lie in such little and fragile creatures. Our evolution and existence within an impressive universe lie at the basis of an extensive list of intriguing facts ranging from physical to psychological. We use power, we heal, we work in very interesting ways overall. So here are some of the numerous mysteries and beauties of the human body.
Our Brain Is As Powerful As a 10-watt Light Bulb
Our brain activity causes a 200 kcal daily consumption, which is the equivalent of 10 watts, 10% of the power used by the traditional 100-watt light bulb. Therefore, those light bulbs associated with someone having an idea might are not as far-fetched as we tend to think. And this energy is produced constantly, even during sleep.
At the level of the atoms, the energy our 7,000,000,000,000,000,000,000,000,000 atoms produce would be sufficient for 20 cities with over 1 million inhabitants each. At the level of the heart, the energy our life organ produces would be sufficient to fuel a truck for as long as 20 miles. What is also interesting about the heart is that it has its own electrical impulse, which enables it to beat even if separated from the body. Finally, the heat our body produces within 30 minutes would enable us to boil 20 gallons of water.
This leads us to the composition of the brain, which is 80% water. Despite accounting for only 2% of our body mass as adults, the brain and its 86 billion neurons use up 20% of our oxygen and calories. However, its achievements are really impressive. For instance, it can store 1 quadrillion bits of information in the long-term, more than the world’s biggest Encyclopedia.
As Adults, Our Blood Vessels Would Spread Over 100,000 Miles if Disposed In a Line
Our blood vessel network is rather impressive, covering significant distances if disposed linearly, more exactly over 60,000 miles during childhood and over 100,000 miles during adulthood. In other words, our blood vessels could go around the world more than twice as children and more than four times as adults.
These vessels are fueled by the heart, which produces 2.4 million liters of blood and pumps it throughout 36 million beats a year. As expected, the cells also travel around the human body all the time, a complete “tour” lasting as little as 60 seconds.
In terms of speed, you might find it interesting that our sneezes travel at over 100 mph, whereas our nerve impulses travel at approximately 250 mph. However, this performance comes at significant energy costs, which, impressively enough, the brain does not mind.
The Activity of The Brain at Night is Greater Than During The Day.
The purpose of sleep is to enable the brain to manifest its full assimilation potential the next day. According to the studies, we require at least 7 hours of sleep a night in order to maintain a long life expectancy. The longest time a person has managed to stay awake appears to be 11 days.
These assimilation facts have also led to studies concluding that the function of sleep is tightly connected to that of dreams. Also, the higher a human’s IQ, the more dreams they will have. On average, we dream approximately 15,000 dreams a year. Moreover, dreaming is healthy. It keeps us mentally stable. Even nightmares do.
Apparently, the chances of having a nightmare increase as the temperature in the room where we sleep decreases. Moreover, it appears women are more likely to have them than men. And they are also more intense from an emotional point of view.
People don’t usually remember their dreams. However, spicy foods seem to improve this ability. Whether you eat spicy foods or not, you must be awake for at least a few minutes in order to remember them. On a physical level, it appears people wake up approximately 1 cm taller than when they go to sleep the night before.
Humans Actually Have a Total of 20 Senses, Not 5.
We can see, we can feel, we can hear, we can taste and we can smell, but we can also keep our balance, experience pain, suffocation, fullness or thirst, among others. Some people can even hear colors or taste words due to a condition known as synesthesia. However, we cannot smell while asleep, a rather surprising fact given the skill of our nose, which can remember a range of 50,000 different smells.
The mouth is equally impressive as an organ, our taste buds, which usually lose their function by the age of 60, perceiving over 1 billion different tastes. Also, what few people know is that we have tongue prints as well, not just finger prints.
The sense of touch also holds a number of surprises. For instance, it appears tickling only works if somebody else does it to us. Also, if our fingers were as large as Earth, we would be able to distinguish houses from cars by only touching them.
However, 90% of the information we collect we collect through sight, as our focusing eye muscles perform their 100,000 movements a day. Human sight is as accurate as 576 megapixels in a digital camera. In fact, if the Earth were flat instead of round, we could see the light produced by a candle at night from any distance of up to 30 miles.
The Stomach Produces Acid So Strong That It Can Dissolve Razorblades.
We have seen that the human body can do interesting things. Well, it can also produce extraordinary things. For instance, the sweat produced by a human’s feet throughout a day can fill a pint, just like the saliva we produce throughout our lives could fill two swimming pools. We could also repopulate the Earth within six months since an average man produces 10 million sperm cells daily. Each of these sperm cells can create 300,000,000,000,000 billion different people in combination with a female egg.
As for our stomachs, the acid they produce for digestion could just as easily digest our stomach if the stomach lining wouldn’t replace itself every 3-4 days. A similar thing applies to the enzymes involved in digestion. They turn against us and start eating us after 3 days from our death. A funny thing about the stomach lining is that it also blushes when we do.
This leads us to our skin and its abilities, which are mostly regenerative ones. We leave 4 kg of skin behind within a year, so that most of the dust we collect from underneath our beds is our own skin.
The Human Body Produces Amazing Psychological Responses to Various Situations.
The human body allows us to easily differentiate between the sense of touch and that of feel. For instance, loneliness produces physical pain, although that is just a matter of nerve impulses being transmitted to the brain. Therefore, we tend to avoid loneliness by seeking human interactions. By the way, sleeping with more than one pillow appears to be an indication of loneliness and depression.
The human body has a very interesting response to emotional distress in general, whatever form it may take. You may already know that stress causes complications or illnesses altogether. However, you might not know that the composition of our tears varies depending on the states that cause our crying. Thus, a tear formed a result of hope will not be the same as one formed a result of grief, for instance. Women tend to cry 30 to 60 times a year as compared to men, who apparently cry only 6 times.
According to various studies, the color blue can provide a solution, among others, for it has a calming effect as a result of causing hormones to be released in the body.
By: William Creswell
There is an Entire Cultural History Lying Behind The Way We Function as a Species.
From history to science, from literature to art, from myth to anthropology, our reactions and the ways in which we function as a species reflect into various areas, just as they themselves are reflections of our evolution.
Studies show that we have inherited the hiccup from amphibians and air-breathing fish, we have inherited goose pimples and teeth squeezing from our predecessors, and the origins of our hair in the primate world are as clear as day. Of course, there are all kinds of differences due to the evolutionary process, but the origins are clear. For instance, in most animals, the trachea is above the esophagus and food is pushed down to the lower esophagus by gravity. In humans, however, it is the trachea and esophagus that were pushed down by gravity to fit in a speech organ. Also, we seem to produce about as many hairs as chimpanzees, but the functions of this hair differ. In fact, in us, humans, the body hair has no function. However, some studies associate increased hairiness with higher IQs.
In other words, the interesting nature of the human body starts at its origins. And it is interesting indeed.
By: Taymaz Valley
A New “Us” Is Born Every 7 Years As a Result of Our Cellular Activity
The human body consists of an impressive number of approximately 75 trillion cells which undergo constant changes and interact to preserve our life and consciousness. Two hundred million cells are replaced within the human body every minute and therefore 300 billion every day, so that a new “us” is born every 7 years. However, some cells do not regenerate, so they must be preserved with great care.
This cellular structure and activity makes us humans very special indeed, for we produce almost as many cells every day as there are stars in the galaxy. This is not a random fact, leading to the belief that we are made of stardust, which makes sense. All the elements forming our body, from carbon to oxygen atoms, have their origins in stars existing in the sky over 4.5 billion years ago. In fact, 90% of our cells aren’t even human, which makes facts like 50% of our DNA being the same as that of bananas less crazy.
Apart from their origins and replacement activity, the things our cells do are equally impressive. For instance, they react to our thoughts so that our heart responds to the kind of music we listen to and positive thinking really generates an improved immune activity of the body.