When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Poor eyesight (myopia) is associated with higher IQ.
232
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
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
Tigers can see 6 times better at night than humans.
305
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139