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- Humans use only 10 percent of their brains
- A penny dropped from the top of a tall building could kill a pedestrian
- Water drains backwards in the Southern Hemisphere due to the Earth's rotation
- Men think about sex every seven seconds
- Chickens can live without a head
- Yawning is "contagious"
- Eating a poppy seed bagel mimics opium use
- A dog's mouth is cleaner than a human's
- There is no gravity in space
- Lightning never strikes the same place twice
