For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
You can't tickle yourself.
29
Your thumb is about the same size as your nose.
124
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The human brain is more active during sleep than during the day.
28
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218