You forget 90% of your dreams.
256
Your fingernails grow faster in summer.
744
A person can live without food for about a month, but only about a week without water.
156
You can't tickle yourself.
29
Yawns are more contagious among people with closer relationships.
163
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
Only humans shed emotional tears.
331