The human brain is more active during sleep than during the day.
28
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
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
On average, there's 100 billion neurons in the human brain.
83
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
