25 Crazy Facts About The Human Body

Posted by on January 12, 2012

In spite of the fact that you have to take it with you everywhere you go (or at least we hope so), we are willing to bet there are a good number of things you didn’t know about your body. As amazing as it is, it can also be very strange and hopefully by the time you get done reading these 25 crazy facts about the human body you’ll have come to know yourself a little better on the inside.

The average person produces enough saliva in their lifetime to fill up two swimming pools.


Most babies are born with blue eyes. Exposure to ultraviolet light (the sun) and melanin are what eventually bring out their true color.


Except for identical twins, every person on earth has a unique smell.


Your brain is demanding, as it uses about 20% of your entire body’s oxygen and caloric intake.


In order to taste something your saliva must be able to dissolve it. Hard to believe? Try drying off your tongue before eating your favorite candy.


Your bones are strong. Very strong. In fact, one matchbox sized chunk of bone can support over 9 tons of weight, or four times that of concrete.


For the next sixty seconds if you could follow one of your blood cells it would take you on a complete circuit of your body.


We are visual creatures, as almost 90% of the information we receive about our environment comes from our eyes.


On average, men produce about 10 million new sperm daily. That’s enough to repopulate the entire planet in 6 months.


Your skin is the largest organ in your body and in a male adult, if it were to be stretched out, it would cover roughly 20 sq ft.


To grow all the way from the base to the tip, your finger and toenails can take up to half-a-year.


The digestive acid in your stomach is strong enough to dissolve zinc, which begs the question, how on earth does it stay there? Simple, it’s because your stomach cells are renewed more quickly than the acid can destroy them.


A baby’s foreskin, which is no bigger than a postage stamp, can grow to be the size of 3 basketball courts in less than a month. This is why it is used extensively to treat burn patients.


Over the course of your lifetime, if you are an average human, you will shed about 40 lb of skin (18kg).


In each one of your kidneys there are 1 million filters that clean around 1.3 liters of blood every minute and push out close to 1.5 liters of urine daily.

Syed Balkhi


Syed is a co-founder of List25 and a very successful blogger. He is most famously known for his blog WPBeginner that covers WordPress tutorials, beginners guides on topics like installing WordPress, choosing WordPress hosting, and more.

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  • http://www.abouthealthfitness.net/ john

    Nice facts

  • linapie42

    4 is wrong brush your finger across your foot

  • nate

    i think 4 is rong i tried what ray said thx ray


    one of them is obvious that its wrong QUITE ALOT OF PEOPLE CAN TICKLE DEMSELVES :) XD and sadly i have to tickle my sis cuz shes to lazy to

    • scott


  • Joan Y. Edwards

    I enjoyed reading these. Thank you for sharing.

    Celebrate you.
    Never Give Up

    Joan Y. Edwards

  • bill q

    you can tickle yourself. Brush your fingers lightly across your lips.

  • Keith

    The one about baby’s foreskin is wrong

  • Jake contreras

    10,000,000 million sperm daily!!! No wonder us men think about sex all the time!!! We need to get them out!!!

  • Kwame

    I can tickle myself and laugh!

  • z

    and according to one, i was smarter as a child than i am now

  • z

    i tickled myself before this is wrong

  • Patricia cormier

    that is good to now about things like your body

  • Syam

    Isn’t there special tissue that protects the stomach from the acid? instead of renewing cells? at least, that’s what I know, correct me if I’m wrong :)

    And Oh, Fact #4 isn’t true for me; I can easily get tickled if I just gather my fingers at the center of my knee knee and then spread them apart :P (Hope you get the picture)

  • ZCups

    Atlanta to Denver is roughly 1500 miles, so Atl to LA is going to be significantly more. Good facts though.

  • ray

    #4 is wrong.. put your finger on the front of the roof in your mouth

  • maliha rajwana

    good facts never knew them………..quite interesting…i liked it:)

  • Alex Turpin

    Baby foreskins are used to treat burn patients? Really?