The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
244
There are 53 Lego bricks manufactured for each person in the world.
83
The average cough comes out of your mouth at 60 miles per hour.
126
Wearing red increases attraction.
30
The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
Caffeine boosts memory.
405
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
The only king without a moustache in a deck of cards is the king of hearts.
63