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
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
There are about 255 babies born worldwide every minute.
46
Every human spent about half an hour as a single cell.
144
Enamel is hardest substance in the human body.
61