One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
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"Dysania" is the state of finding it hard getting up out of bed in the morning.
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Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
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In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
Those who get out of bed by 7am are more likely to be thinner and happier.
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