Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
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47% of people have a nightmare at least once a month.
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"Dysania" is the state of finding it hard getting up out of bed in the morning.
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Honeybees never sleep.
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You forget 90% of your dreams.
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A new baby usually deprives each of it's parents around 350-400 hours of sleep in the first year. That is one entire nights sleep per week, per parent.
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Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15