The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
Standard paper cannot be folded in half more than 7 times.
232
No matter its size or thickness, no piece of paper can be folded in half more than 8 times.
-64
Diamonds mined in Brazil are harder than those found in Africa.
40
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
The chills you sometimes feel when listening to music is called "musical frisson."
18
The hole in the soda can tab is actually used to hold a straw in place and stop it from rising.
27
There are 170,000,000,000,000,000,000,000,000 ways to play the ten opening moves in a game of chess.
266