Your fingernails grow faster in summer.
744
In one day, adult lungs move about 10,000 litres of air.
11
Gorillas can catch human colds and other illnesses.
205
On average, there's 100 billion neurons in the human brain.
83
On average a woman has 4 sexual partners in her lifetime.
-143
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
The human brain is more active during sleep than during the day.
28