What biological facts should everyone know?

1.The cornea of our eyes is the only part of the body without blood supply – it draws its oxygen directly from the air.


The human body contains enough fat to make seven pieces of soap.

3.Embryos develop fingerprints three months after conception.

4.At birth, the human body has 300 bones, as we age, there are only 206.

Fact = A quarter of your bones are in your feet – and as a bonus, babies have 94 more bones than adults.


Hearts can beat outside their bodies.

6.If you blush, the inside of your stomach does too.

Fact = All mammals have a “diving mechanism” that protects them from drowning.


People have a “diving reflex” that switches off body functions underwater to prevent drowning.

8.There are certain types of tumors that make their own teeth and hair grow – they are called teratomas.

9.Man is biolucent, the light is simply not perceptible to the human eye.


Astronauts can grow up to 5 cm taller in space.

11.Your brain can survive five to 10 minutes without oxygen.


With extreme hunger, the brain begins to eat itself.

13.When you listen to music, your heartbeat is synchronized with the rhythm.


The small intestine is about 23 feet long.

15.A quarter of your bones are in your feet.

16.Each organ you own takes only one to survive.

17.There are more than 100,000 miles of blood vessels in your body.


They are bigger in the morning than at night.

19.You cannot breathe and swallow at the same time.


Your left kidney is higher than your right kidney.

21.Your ears and nose never stop growing.


Women’s brains shrink during pregnancy.

23.If you had smoothed all the wrinkles in your brain, it would be as big as a pillowcase.


Stomach acid can dissolve metal. If it touches your skin, it would directly burn your skin.

25.At some point, you may have been battling cancer.

26.The average person produces enough saliva in their life to fill two swimming pools.


Tongue prints are as unique as fingerprints.

28.Humans shed about 600,000 skin particles every hour.

29.Babies blink only once or twice a minute, while adults blink on average 10 times per minute.


The jaw muscle is the strongest muscle in the human body.

31.When awake, your brain produces enough electricity to light a light bulb.

32.In terms of the camera, the human eye has about 576 megapixels.

33.They carry an average of about four pounds of bacteria in your body.

34.The highest fever ever measured was 115 degrees Fahrenheit.


50 percent of your hand power comes from your little finger.

36.Men’s testicles hang under their bodies because the sperm dies at body temperature


Cornflakes have more genes than humans.

38.You may feel like you’re being trained, but sex burns only about 3.6 calories per minute.

39.People can’t digest grass. Although health fanatics claim that wheatgrass supports digestion, humans actually need multiple stomachs to digest it, as is the case with cows.


The scientific name for stomach growls is “Borborygmus”.

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