A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
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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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Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
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The human brain is more active during sleep than during the day.
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Bats sleep 18-20 hours per day.
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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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In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
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