There are more nerve cells in the human brain than there are stars in the Milky Way.
349
The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
244
In many countries, urine was used as a detergent for washing.
17
62% of us pop our zits.
137
Wearing red increases attraction.
30
It's impossible to kill yourself by holding your breath.
703