Human thigh bones are stronger than concrete!
63
Only 1% of bacteria cause disease in humans!
2
In the average lifetime a person will breath in about 44 pounds of dust.
21
Human teeth are almost as hard as rocks!
47
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
25% of your bones are located in your feet.
12
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99