Pain occurs when sounds are above 130 db.
124
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Your thumb is about the same size as your nose.
124
Early American humans hunted car-size armadillos and used their shells for houses.
12
You can't tickle yourself.
29
You forget 90% of your dreams.
256
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
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252