Science

The human body is full of surprises. For example, when I get enough sleep, drink water, and eat healthy, I feel.... good?! It surprises me every single time it happens, which is about twice a year.Seriously though, these flesh sacks that carry us through the world are full of magical and bizarre functions that most of us aren&#39;t even aware of. And once you learn them, you may never look at your body the same way again.In a popular Reddit thread, someone <a href="https://www.reddit.com/r/AskReddit/comments/nbj60o/what_is_a_fact_about_the_human_body_that_not_many/" target="_blank">asked</a>: &quot;What is a fact about the human body that not many people know about?&quot;<h2>Prepare to have your mind at least a little bit blown by some of these 25 little-known bodily facts:</h2>1.) From <a href="https://www.reddit.com/user/bathroomkiller/">bathroomkiller</a>:<blockquote> we have a fifth valve in our hearts that seals up right after we&rsquo;re born. Apparently anything similar to that afterwards is a huge surgical procedure. The human body is amazing. </blockquote><div className="ad-splitter"></div>2.) From <a href="https://www.reddit.com/user/Cruithne/">Cruithne</a>:<blockquote> If you squirt warm water into someone&#39;s ear with a syringe, their eyes will automatically turn to the side that you squirted the water. If you use cold water, their eyes will automatically turn to the other side. </blockquote>3.) From <a href="https://www.reddit.com/user/TexasPatrick/">TexasPatrick</a>:<blockquote> Humans are one of a few species of mammal that oddly don&#39;t produce their own vitamin C due to lack of a certain enzyme. Other mammalian species who exhibit this mutation are those contained in the main primate suborder Haplorhinni (monkeys, apes, tarsiers), as well as bats, capybaras, and guinea pigs. All other mammals produce vitamin C in the liver. </blockquote>4.) From <a href="https://www.reddit.com/user/thundermuffin54/">thundermuffin54</a>:<blockquote> Most reflexes never make it to your brain. The sensory aspect travels to the spinal cord and the spinal cord itself sends the muscle movement signals to your limbs. </blockquote><div className="ad-splitter"></div>5.) From <a href="https://www.reddit.com/user/flamingphoenix9834/">flamingphoenix9834</a>:<blockquote> Your brain continues to try to revive the body long after the heart has stopped. In some cases 30 hours later there has been found brain activity trying to make repairs to bring the body back. This is used to indicate time of death in murder victims. </blockquote>6.) From <a href="https://www.reddit.com/user/Alagane/">Alagane</a>:<blockquote> Apparently about 20% of people have a bony ridge on the roof of their mouth. Most people&#39;s pallettes are smooth with a very slight ridge. The 20% like me have an exaggerated and more pronounced ridge. Apparently it&#39;s most common in women and Asian folk, and I&#39;m neither so that&#39;s neat. I always thought it was totally normal. </blockquote>7.) From <a href="https://www.reddit.com/user/NoCommunication7/">NoCommunication7</a>:<div className="ad-splitter"></div><blockquote> Your brain likes stimulation, if it doesn&#39;t get any it will make some up, some people are more sucepticle to it then others, the colors you see before you fall asleep are a common mild occurrence, there are several classes of these hallucinations, closed-eye visuals, which are caused by leaving your eyes closed for a long time, hypnagogia, which is caused by the onset of sleep, prisoners cinema, which is caused by looking into a dark place for a long time, ganzfeld effect, which is caused by blocking out all external stimuli, and Charles bonnet syndrome, caused by sight loss. Most are these are simple phosphenes but some can be whole imagined scenes, or more abstract fractal-like imagery </blockquote>8.) From <a href="https://www.reddit.com/user/localhelic0pter7/">localhelic0pter7</a>:<blockquote> People who live in &quot;extreme&quot; conditions for generations adapt in extreme ways. For example people that live in high elevations often have larger lungs and different blood makeup. Or my favorite is the Bajau people that live on the water and spend a lot of their time diving, their spleens have become 50% larger in order to store more blood. </blockquote><div className="ad-splitter"></div>9.) From <a href="https://www.reddit.com/user/insomniac_observer/">insomniac_observer</a>:<blockquote> 30% of body waste is excreted via skin </blockquote>10.) From <a href="https://www.reddit.com/user/grenudist/">grenudist</a>:<blockquote> When you get conditioned to physical activity, your circulatory system adapts -- more blood, more vessels, more blood cells. But your lungs really don&#39;t. This is because no matter how much blood your heart is able to deliver to your lungs, the lungs still have no problem oxygenating it. This is why your oxygen saturation doesn&#39;t drop during exercise (unless you have a heart defect.) </blockquote>11.) From <a href="https://www.reddit.com/user/Shimerald/">Shimerald</a>:<blockquote> There&#39;s a &quot;right&quot; and a &quot;wrong&quot; way to swallow and the first swallow pattern you learn isn&#39;t the right one! Babies swallow by pushing their whole tongue forward (since it&#39;s better for nursing). However, as you transition to solid foods, you are supposed to change to a swallow where you put the tip of your tongue on the roof of your mouth and roll the food back. Not everyone does, and those that don&#39;t are more likely to choke, eat too fast, develop dental problems, and some develop a lisp or distorted sounds as they learn to talk! </blockquote><div className="ad-splitter"></div>12.) From <a href="https://www.reddit.com/user/jaelIlii/">jaelIlii</a>:<blockquote> Babies can break their collarbone during delivery. It happens quite often, but heals quickly. My teacher told me that (if it happened to you ofc) you may feel a slightly higher spot on your collarbone, called the callus where the fracture grew back together. </blockquote>13.) From <a href="https://www.reddit.com/user/Truly_Meaningless/">Truly_Meaningless</a>:<blockquote> Human eggs are small but big enough to be visible to the human eye </blockquote>14.) From <a href="https://www.reddit.com/user/Cruithne/">Cruithne</a>:<blockquote> 39% of people have an <a href="https://www.the-scientist.com/news-opinion/tiny-knee-bone--once-lost-in-humans--is-making-a-comeback-65764" rel="noopener nofollow ugc" target="_blank">extra bone in their knee</a>. 100 years ago only 11% of people had this bone. </blockquote>15.) From <a href="https://www.reddit.com/user/DeLuniac/">DeLuniac</a>:<blockquote> That the body&rsquo;s ph is 7.35 to 7.45 and if any of those scam products that promise to &ldquo;change the PH of your body&rdquo; actually worked, you&rsquo;d be dead. </blockquote><div className="ad-splitter"></div>16.) From <a href="https://www.reddit.com/user/Lipstick_On/">Lipstick_On</a>:<blockquote> Positive blood type women can have positive and negative blood type babies without issue. Negative blood type women require a shot with antibodies to prevent the mothers immune system from attacking the fetus if it is a positive blood type. </blockquote>17.) From <a href="https://www.reddit.com/user/Matrozi/">Matrozi</a>:<blockquote> You can live &quot;normally&quot; with half your brain. In some severe drug resistant epileptic syndrom in young kids, the only option to stop the seizures is to remove a complete brain hemisphere. After a while, with proper reeducation and all, the children can go on to have a normal life without cognitive deficit. They will have a limping, blindness from one eye and a very weark arm but can lead a normal life and not end up cognitively impaired. </blockquote><div className="ad-splitter"></div><blockquote> One of the earliest sign of alzheimer&#39;s disease, before the memory loss, could be the loss of the sense of smell. It&#39;s also the case with Parkinson disease. Our brain looks wrinkled because it is actually &quot;folded&quot; inside our skull in order to fit a maximum of surface and thus neurons &amp; cell communications. Some animals like rodents have a completely smooth brain. </blockquote>18.) From <a href="https://www.reddit.com/user/emzirek/">emzirek</a>:<blockquote> The hyoid bone is a bone not attached to any other bones in the human body and is only considered the anchor of the tongue </blockquote>19.) From <a href="https://www.reddit.com/user/Inner_Inspection6408/">Inner_Inspection6408</a>:<blockquote> Humans have, on average, just as many hairs on their body as chimpanzees, human hair is just a lot shorter and finer. </blockquote>20.) From <a href="https://www.reddit.com/user/felipebsr/">felipebsr</a>:<div className="ad-splitter"></div><blockquote> The surface area of the lungs is about the same size as a tennis court </blockquote>21.) From <a href="https://www.reddit.com/user/CurrentAttention3/">CurrentAttention3</a>:<blockquote> You can grow a new human being faster than most missing toenails can grow back </blockquote>22.) From <a href="https://www.reddit.com/user/MoodyTeeth/">MoodyTeeth</a>:<blockquote> Our brains make up, on average, around 2% of our body weight but consume 20% of our caloric intake </blockquote>23.) From <a href="https://www.reddit.com/user/_Nugget_UwU/">_Nugget_UwU</a>:<blockquote> The eyeball is the fastest healing part on your body. </blockquote>24.) From <a href="https://www.reddit.com/user/centaurquestions/">centaurquestions</a>:<blockquote> Pregnant women have 50 percent extra blood! </blockquote>25.) From <a href="https://www.reddit.com/user/Hattix/">Hattix</a>:<div className="ad-splitter"></div><blockquote> Your stomach is surrounded by more brain cells (half a billion neurons) than the brain of a cat contains in total. It&#39;s your enteric nervous system. It controls digestion, operates autonomously, has its own memory, can handle its own reflexes, it has its own senses even. It&#39;s thought to have come about because of the blood-brain barrier and the main brain being locked away in the skull, a spinal column and nerves away from the critical action of nutrition. </blockquote>26.) From <a href="https://www.reddit.com/user/CurrentlyLucid/">CurrentlyLucid</a>:<blockquote> Touch between your eyes then push up with your tongue of roof of your mouth, you can barely feel a bone move. If you do this while your nose is stuffed, it will make it drain about a minute later. </blockquote><figure class="image"><div class="image-container"><img alt="" onload="(__markFirstPostVisible || function(){})();" src="https://www.redditstatic.com/desktop2x/img/renderTimingPixel.png" /></div></figure><div className="ad-splitter"></div>

26 people share weird and surprising facts most of us don’t know about the human body.

The human body is full of surprises. For example, when I get enough sleep, drink water, and eat healthy, I feel.... good?! It surprises me every single time it happens, which is about twice a year.Seriously though, these flesh sacks that carry us through the world are full of magical and bizarre functions that most of us aren&#39;t even aware of. And once you learn them, you may never look at your body the same way again.In a popular Reddit thread, someone asked: &quot;What is a fact about the human body that not many people know about?&quot;Prepare to have your mind at least a little bit blown by some of these 25 little-known bodily facts:1.) From bathroomkiller: we have a fifth valve in our hearts that seals up right after we&rsquo;re born. Apparently anything similar to that afterwards is a huge surgical procedure. The human body is amazing. 2.) From Cruithne: If you squirt warm water into someone&#39;s ear with a syringe, their eyes will automatically turn to the side that you squirted the water. If you use cold water, their eyes will automatically turn to the other side. 3.) From TexasPatrick: Humans are one of a few species of mammal that oddly don&#39;t produce their own vitamin C due to lack of a certain enzyme. Other mammalian species who exhibit this mutation are those contained in the main primate suborder Haplorhinni (monkeys, apes, tarsiers), as well as bats, capybaras, and guinea pigs. All other mammals produce vitamin C in the liver. 4.) From thundermuffin54: Most reflexes never make it to your brain. The sensory aspect travels to the spinal cord and the spinal cord itself sends the muscle movement signals to your limbs. 5.) From flamingphoenix9834: Your brain continues to try to revive the body long after the heart has stopped. In some cases 30 hours later there has been found brain activity trying to make repairs to bring the body back. This is used to indicate time of death in murder victims. 6.) From Alagane: Apparently about 20% of people have a bony ridge on the roof of their mouth. Most people&#39;s pallettes are smooth with a very slight ridge. The 20% like me have an exaggerated and more pronounced ridge. Apparently it&#39;s most common in women and Asian folk, and I&#39;m neither so that&#39;s neat. I always thought it was totally normal. 7.) From NoCommunication7: Your brain likes stimulation, if it doesn&#39;t get any it will make some up, some people are more sucepticle to it then others, the colors you see before you fall asleep are a common mild occurrence, there are several classes of these hallucinations, closed-eye visuals, which are caused by leaving your eyes closed for a long time, hypnagogia, which is caused by the onset of sleep, prisoners cinema, which is caused by looking into a dark place for a long time, ganzfeld effect, which is caused by blocking out all external stimuli, and Charles bonnet syndrome, caused by sight loss. Most are these are simple phosphenes but some can be whole imagined scenes, or more abstract fractal-like imagery 8.) From localhelic0pter7: People who live in &quot;extreme&quot; conditions for generations adapt in extreme ways. For example people that live in high elevations often have larger lungs and different blood makeup. Or my favorite is the Bajau people that live on the water and spend a lot of their time diving, their spleens have become 50% larger in order to store more blood. 9.) From insomniac_observer: 30% of body waste is excreted via skin 10.) From grenudist: When you get conditioned to physical activity, your circulatory system adapts -- more blood, more vessels, more blood cells. But your lungs really don&#39;t. This is because no matter how much blood your heart is able to deliver to your lungs, the lungs still have no problem oxygenating it. This is why your oxygen saturation doesn&#39;t drop during exercise (unless you have a heart defect.) 11.) From Shimerald: There&#39;s a &quot;right&quot; and a &quot;wrong&quot; way to swallow and the first swallow pattern you learn isn&#39;t the right one! Babies swallow by pushing their whole tongue forward (since it&#39;s better for nursing). However, as you transition to solid foods, you are supposed to change to a swallow where you put the tip of your tongue on the roof of your mouth and roll the food back. Not everyone does, and those that don&#39;t are more likely to choke, eat too fast, develop dental problems, and some develop a lisp or distorted sounds as they learn to talk! 12.) From jaelIlii: Babies can break their collarbone during delivery. It happens quite often, but heals quickly. My teacher told me that (if it happened to you ofc) you may feel a slightly higher spot on your collarbone, called the callus where the fracture grew back together. 13.) From Truly_Meaningless: Human eggs are small but big enough to be visible to the human eye 14.) From Cruithne: 39% of people have an extra bone in their knee. 100 years ago only 11% of people had this bone. 15.) From DeLuniac: That the body&rsquo;s ph is 7.35 to 7.45 and if any of those scam products that promise to &ldquo;change the PH of your body&rdquo; actually worked, you&rsquo;d be dead. 16.) From Lipstick_On: Positive blood type women can have positive and negative blood type babies without issue. Negative blood type women require a shot with antibodies to prevent the mothers immune system from attacking the fetus if it is a positive blood type. 17.) From Matrozi: You can live &quot;normally&quot; with half your brain. In some severe drug resistant epileptic syndrom in young kids, the only option to stop the seizures is to remove a complete brain hemisphere. After a while, with proper reeducation and all, the children can go on to have a normal life without cognitive deficit. They will have a limping, blindness from one eye and a very weark arm but can lead a normal life and not end up cognitively impaired.  One of the earliest sign of alzheimer&#39;s disease, before the memory loss, could be the loss of the sense of smell. It&#39;s also the case with Parkinson disease. Our brain looks wrinkled because it is actually &quot;folded&quot; inside our skull in order to fit a maximum of surface and thus neurons &amp; cell communications. Some animals like rodents have a completely smooth brain. 18.) From emzirek: The hyoid bone is a bone not attached to any other bones in the human body and is only considered the anchor of the tongue 19.) From Inner_Inspection6408: Humans have, on average, just as many hairs on their body as chimpanzees, human hair is just a lot shorter and finer. 20.) From felipebsr: The surface area of the lungs is about the same size as a tennis court 21.) From CurrentAttention3: You can grow a new human being faster than most missing toenails can grow back 22.) From MoodyTeeth: Our brains make up, on average, around 2% of our body weight but consume 20% of our caloric intake 23.) From _Nugget_UwU: The eyeball is the fastest healing part on your body. 24.) From centaurquestions: Pregnant women have 50 percent extra blood! 25.) From Hattix: Your stomach is surrounded by more brain cells (half a billion neurons) than the brain of a cat contains in total. It&#39;s your enteric nervous system. It controls digestion, operates autonomously, has its own memory, can handle its own reflexes, it has its own senses even. It&#39;s thought to have come about because of the blood-brain barrier and the main brain being locked away in the skull, a spinal column and nerves away from the critical action of nutrition. 26.) From CurrentlyLucid: Touch between your eyes then push up with your tongue of roof of your mouth, you can barely feel a bone move. If you do this while your nose is stuffed, it will make it drain about a minute later. 

The human body is full of surprises. For example, when I get enough sleep, drink water, and eat healthy, I feel.... good?! It surprises me every single time it happens, which is about twice a year.  Seriously though, these flesh sacks that...