The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
244
It's impossible to kill yourself by holding your breath.
703
The chances of making two holes-in-one in a round of golf are one in 67 million.
67
The strangers in your dreams are actually people that you've seen in real life.
50
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
On average, every dollar bill you touch has over 3,000 different types of bacteria.
8
The average American uses eight times as much fuel energy as an average person anywhere else in the world.
28
During his or her lifetime, the average human will grow 590 miles of hair.
69