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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In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
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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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The average cat sleeps about 2/3 of the day.
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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.
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You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
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Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
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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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