‘What’s a fact about the human body that not many people know about?’ – 30 jaw-droppers

16.

‘You will sooner die from lack of sleep than lack of food. You can live, depending on your current body fat and health level, for months without food. Estimates are you that you will die for lack of sleep within 2 weeks.’
feliciates

17.

‘Human eggs are small but big enough to be visible to the human eye.’
Truly_Meaningless

18.

‘They are also the largest cell in the human body. The sperm is the smallest.’
TheSecretIsMarmite

19.

‘When you get conditioned to physical activity, your circulatory system adapts — more blood, more vessels, more blood cells. But your lungs really don’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’t drop during exercise (unless you have a heart defect.)’
grenudist

20.

‘30% of body waste is excreted via skin.’
insomniac_observer

21.

‘There are tiny cilia that spin in a certain direction. If they spin in the opposite direction while you’re developing in the womb early on, that is how you get organs transposed onto the opposite side of your body.’
gurgleslurp

22.

‘Your stomach is surrounded by more brain cells (half a billion neurons) than the brain of a cat contains in total. It’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’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.’
Hattix

23.

‘There’s a “right” and a “wrong” way to swallow and the first swallow pattern you learn isn’t the right one! Babies swallow by pushing their whole tongue forward (since it’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’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!’
Shimerald

24.

‘In theory humans could breathe a liquid if it was super saturated with oxygen. It wouldn’t be easy because the density of liquid being so much higher than air so after 15 mins or so you would be too fatigued to continue breathing. The hardest part is getting all the liquid out of the lungs so the person doesn’t get pneumonia.’
Crackracket

25.

‘Synovial joint fluid is the most frictionless stuff on the planet (unless they’ve synthetic’ed something up that recently.) It’s SuperLube.’
that_doesnt_gothere

26.

‘When doing surgery were the doctors have to take out some organs, when placing them back, they dont have to be put back In the exact position there meant to be, your body kind of just, moves the organs into the correct position after the surgery.’
IamaJarJar

27.

‘Babys 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.’
jaelIlii

28.

‘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.’
thundermuffin54

29.

‘People who live in “extreme” 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.’
localhelic0pter7

30.

‘That the body’s ph is 7.35 to 7.45 and if any of those scam products that promise to “change the PH of your body” actually worked, you’d be dead.’
DeLuniac

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‘What’s a totally false myth about your country that’s 100% believed?’ – 27 favourites

Source Reddit u/Zenssei Image Pexels

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