1. The lens of the human eye is composed of 65
% of water and 3 % of protein.
2. We shut our eyes for 0.3 seconds, when we
blink.
3. Eyes are the only part of the human body
that functions at 100 percent ability at any
movement.
4. A drop of blood contains 250 million cells.
5. The liver is the largest and heaviest internal
organ of the body and weighs about 1.6 kilos.
6. In the womb, the baby's body is covered by
a thin layer of hair but as soon as the baby is
born it disappears.
7. Babies crawl to an average of 200 m a day.
8. The only joint less bone in the human body is
the hyoid bone, which is present in the throat
area.
9. Eating Break fast helps to burn 5 to 20
percent of calories throughout the day.
10. The surface of human tongue is covered
with 100 of tiny structures called papillae.
11. On an average, a persons left hand does 56
% of typing.
12. A person can live without food for about a
month, but only a week without water.
13. Threshold pain of women is 9 times
stronger than men.
14. The palms of the hands and soles of the
feet contain more sweat glands than other parts
of the body.
15. 10 % of men and 8 % of women are left-
handed.
16. An average human body contains enough
amount of fat to make seven bars of soap.
17. The human body releases growth hormones
during sleep.
18. Red blood cells are about seven micrometer
in diameter.
19. The thighbone is so strong that it
withstands the axial load of about 1600-1800
kilos.
20. An average adult male brain weighs about
1375 grams.