20 unknown facts about the human body

2.  A single hair can hold the weight of a hanging Apple. However, scientists don't specify the dimensions of the Apple.

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

4. The speed of an incoming brain impulse is about 400 km/hour.

5. There are not just four different blood types, as we used to think, but in fact 29 the rarest of them belong to the Bomb Bay subtype, which is typical for a small group of families in Japan.

6.  over the course of one day our blood runs the distance of 11.999 miles or 19, 312 km. 

7. A human makes approximately 20.000 breaths per day.

8. Almost all people in the world have special mites on their eyelashes called DemoDex

9. A human eye can distinguish up to 10 million different colors, but our brain can't remember all of them

10. Our ears keep on growing throughout our lives with almost unbelievable speed a quarter of a milimeter per year.

11. The heartbeats 35 million times a year. Yes, 35 million a year.

12. Every day the human body loses about 1 million skin cells that amounts to about four and a half pounds or two kilos every year.

13. THE AVERAGE PERSON CONSUMES ABOUT 77,000 LBS.  (OR 35 TONS) OF FOOD DURING HIS OR HER LIFE.

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

15. 100.000 chemical reactions occur every second in our brain.

16. Women cry an average of 30 to 64 times a year, and men cry just six to 17 times.

17. Smiling trigger 17 Muscles of the face while crying activates 43 re so smile more

18. the total length of all the nerves in the human body is 46 miles or 75 km.

19. Women blink twice as much as men. Also, women's hearts beat faster than men.

20. the speed of your sneeze is 100 mph or 140 km/hour.

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