In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
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44% of kids watch television before they go to sleep.
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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You forget 90% of your dreams.
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Cows can sleep standing up, but they can only dream lying down.
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Lack of water is the #1 trigger of daytime fatigue.
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The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
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The average cat sleeps about 2/3 of the day.
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