Most of the dust underneath your bed is actually your own dead skin.

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If you eat a piece of cheese 30 minutes before going to bed, you will fall asleep easier and sleep better. British scientists came to such an unexpected conclusion in 2005. The amino acid tryptophan contained in cheese has a positive effect on the state of the nervous system, stopping stress and reducing anxiety.

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Holding a vibrator against a person's throat relaxes the vocal muscles, thereby improving their voice quality. According to research at the University of Alberta, holding a vibrator against the throat relaxes its muscles, which in turn eases vocal fatigue and improves the overall sound quality of a voice.

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When it gets cold enough for ice crystals to form close to the ground, light pillars can appear before your eyes, The ice crystals reflect natural and artificial light and create vibrantly colorful columns that extend through, the sky. This optical phenomenon creates one of the most breathtaking sceneries.

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Rudolf Ingram is the fastest 7-year-old boy in the world. He finished the 100-meter race in 13.48 seconds.

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The "smell of rain" is caused by a bacteria called actinomycetes.

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A Colorized photo of Madam CJ Walker in her Ford, 1910s. She was born to slave parents and became the first female self-made millionaire in America.

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Sweat Is Odorless, When your nose starts to smell that all-too-familiar funk, it’s actually a result of the naturally occurring bacteria on your skin breaking down the proteins in your sweat.

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Almost 2/3 of people have experienced deja vu based on dreams.

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If a guide dog without an owner comes up to you on the street, it means that the owner is in trouble somewhere nearby and needs help. Remember this, and one day you might save someone's life.

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Dogs can smell Cancer. If your dog is acting weird near you, you should go and get yourself checked.

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The heart symbol was first used to denote love in the 1250. Prior to that, it represented foliage. The first known depiction of a heart-shape as a symbol of love was in the 1250's French manuscript the Roman de la poire, in which a young man holds his vaguely pine cone-shaped heart up towards his lady love. Up until the fourteenth century, the heart was usually depicted upside down.

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Beekeepers are advised not to eat bananas due to their smell making bees agressive because it releases the same chemical that alert bees to attack.

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When you first meet people, it's common to forget their names due to a phenomenon called the ‘next-in-line' effect. People are often too worried about themselves, and what they'll say next, to focus on remembering the names of people they're meeting.

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The inventor of Vaseline used to eat a spoonful of it every day. Chesebrough lived to be 96 years old and was such a believer in Vaseline that he claimed to have eaten a spoonful of it every day. He died at his house in Spring Lake, New Jersey. He also, reportedly, during a serious bout of pleurisy in his mid-50s, had his nurse rub him from head to foot with Vaseline.

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The human heart will beat 2.5 billion times during an average lifetime.

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