21 Amazing Facts about the Human
Body That We Never Knew

We tend to think that we know our own bodies perfectly.
We know how they work and what kinds of changes and
processes are occurring in them every second of the day.
But in fact, the human body is one seriously complex and
mysterious mechanism that sometimes confuses even the
most qualified specialists — doctors and scientists.
We at Bright Side found 21 stunningly interesting facts about
our body that deeply impressed us. Did you know about all
these?
1. A tongue print is absolutely unique; remember this when
showing it to somebody!
springer
© (с) Neil Bryars

2. A single hair can hold the weight of a hanging apple.
However, scientists don’t specify the dimensions of the
apple.
theguardian

3. The number of bacteria in a person’s mouth is equal
to the number of people living on Earth, or even more.
harvard.edu

4. Nails that are soft and brittle, with no moon, could
indicate an overactive thyroid.
dailymail

5. The speed of an incoming brain impulse is about 400 km/
h.
scienceline

6. There are not just four different blood types as we used
to think, but in fact 29! The rarest of them belongs to the
Bombay subtype, which is common for a small group
of families in Japan.
ncbi

7. Over the course of just one day, our blood ’runs’ the
distance of 19,312 kilometers.
howstuffworks
© (с) CaseyFyfe

8. The total length of all the nerves in the human body
is 75 kilometers.
washington

9. A human makes approximately 20,000 breaths per day.
epa.gov

10. Almost all people in the world have special mites on their
eyelashes called demodex.
microscopy-uk.org.uk
© depositphotos

11. A human eye can distinguish up to 10 million different
colors. But our brain can’t remember all of them.
color-theory-phenomena

12. Our ears keep on growing throughout our lives with
almost unbelievable speed — a quarter of a millimeter per
year!
ncbi

13. The heart beats 35 million times a year. Yes, 35 million.
A year!
rodgershealth
© (с) Anna Zhuk

14. Every day, the human body loses about one million skin
cells — that amounts to 2 kilos every year.
health

15. 1 square centimeter of your skin contains around
a hundred pain sensors.
hometrainingtools

16. Boys have fewer taste buds on the surface of their
tongues than girls do.
sciencedaily

17. The average person consumes about 35 tons of food
during his or her life.
Teaching Ideas and Classroom Activities for Health Care
© (с) Isabel

18. A human spends about five years of their life blinking.
Fortunately, we can do many other things simultaneously!
makewav

19. 100,000 chemical reactions occur every second in our
brains.
The Hidden Spirituallity of Men

20. The speed of your sneeze is 160 km/h.
scienceline

21. Smiling triggers 17 muscles of the face while crying
activates 43. So smile more!

[b]21 Amazing Facts about the Human
Body That We Never Knew

We tend to think that we know our own bodies perfectly.
We know how they work and what kinds of changes and
processes are occurring in them every second of the day.
But in fact, the human body is one seriously complex and
mysterious mechanism that sometimes confuses even the
most qualified specialists — doctors and scientists.
We at Bright Side found 21 stunningly interesting facts about
our body that deeply impressed us. Did you know about all
these?
1. A tongue print is absolutely unique; remember this when
showing it to somebody!
springer
© (с) Neil Bryars
2. A single hair can hold the weight of a hanging apple.
However, scientists don’t specify the dimensions of the
apple.
theguardian
3. The number of bacteria in a person’s mouth is equal
to the number of people living on Earth, or even more.
harvard.edu
4. Nails that are soft and brittle, with no moon, could
indicate an overactive thyroid.
dailymail
5. The speed of an incoming brain impulse is about 400 km/
h.
scienceline
6. There are not just four different blood types as we used
to think, but in fact 29! The rarest of them belongs to the
Bombay subtype, which is common for a small group
of families in Japan.
ncbi
7. Over the course of just one day, our blood ’runs’ the
distance of 19,312 kilometers.
howstuffworks
© (с) CaseyFyfe
8. The total length of all the nerves in the human body
is 75 kilometers.
washington
9. A human makes approximately 20,000 breaths per day.
epa.gov
10. Almost all people in the world have special mites on their
eyelashes called demodex.
microscopy-uk.org.uk
© depositphotos
11. A human eye can distinguish up to 10 million different
colors. But our brain can’t remember all of them.
color-theory-phenomena
12. Our ears keep on growing throughout our lives with
almost unbelievable speed — a quarter of a millimeter per
year!
ncbi
13. The heart beats 35 million times a year. Yes, 35 million.
A year!
rodgershealth
© (с) Anna Zhuk
14. Every day, the human body loses about one million skin
cells — that amounts to 2 kilos every year.
health
15. 1 square centimeter of your skin contains around
a hundred pain sensors.
hometrainingtools
16. Boys have fewer taste buds on the surface of their
tongues than girls do.
sciencedaily
17. The average person consumes about 35 tons of food
during his or her life.
Teaching Ideas and Classroom Activities for Health Care
© (с) Isabel
18. A human spends about five years of their life blinking.
Fortunately, we can do many other things simultaneously!
makewav
19. 100,000 chemical reactions occur every second in our
brains.
The Hidden Spirituallity of Men
20. The speed of your sneeze is 160 km/h.
scienceline
21. Smiling triggers 17 muscles of the face while crying
activates 43. So smile more!

Source: https://brightside.me/inspiration-health/20-amazing-scientific-facts-about-the-human-body-that-we-never-knew-139455/
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