The average person's skin weighs twice as much as their brain.
131
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
Enamel is hardest substance in the human body.
61
Gorillas can catch human colds and other illnesses.
205
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
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
A person can live without food for about a month, but only about a week without water.
156