To get a song out of your head, try doing something like a puzzle or Sudoku.
13
The strangers in your dreams are actually people that you've seen in real life.
50
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
At 90 degrees below zero, your breath will freeze in mid-air and fall to the ground.
25
The name Joshua is Hebrew for 'Jesus'.
74
By peeing in the shower, you can save 1,157 gallons of water a year.
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