Our brains have a negativity bias and will remember bad memories more than good ones.
15
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
On average, there's 100 billion neurons in the human brain.
83
The human brain uses approximately as much energy as a 10 watt light bulb.
120
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31