For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
The human sigh acts as a physiological reset button.
23
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
The human brain doesn't stop developing until about 25 years old.
102
Poor eyesight (myopia) is associated with higher IQ.
232
Your thumb is about the same size as your nose.
124
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132