Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
Smokers get ten times more wrinkles than non-smokers.
171
The first patented condom was meant to be reused!
47
Sitting straight upright in your chair is bad for your back. You should instead slouch at an angle of 135 degrees.
10
Women buy four out of every 10 condoms sold.
71
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Music has the ability to repair brain damage and return lost memories.
62
A person can live without food for about a month, but only about a week without water.
156