On average, there's 100 billion neurons in the human brain.
83
Poor eyesight (myopia) is associated with higher IQ.
232
The human brain is more active during sleep than during the day.
28
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Human hair and fingernails continue to grow after death.
7
Mushrooms are more closely related to humans than they are to plants.
47
The human sigh acts as a physiological reset button.
23
Our brains have a negativity bias and will remember bad memories more than good ones.
15