There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
On average, there's 100 billion neurons in the human brain.
83
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
In one day, adult lungs move about 10,000 litres of air.
11
On average a woman has 4 sexual partners in her lifetime.
-143
The human eye blinks an average of 4,200,000 times a year.
233
You can't tickle yourself.
29
Tigers can see 6 times better at night than humans.
305