On average, there's 100 billion neurons in the human brain.
83
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
The human brain has the capacity to store everything that you experience.
4k
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
Poor eyesight (myopia) is associated with higher IQ.
232
We share 70% of our DNA with a slug.
218
You forget 90% of your dreams.
256
A man's beard grows fastest when he anticipates sex.
239