In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
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You forget 90% of your dreams.
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Honeybees never sleep.
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Sleeping on the job is acceptable in Japan. It is viewed as exhaustion from working hard. Some people fake it to look committed to their job.
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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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