"Dysania" is the state of finding it hard getting up out of bed in the morning.
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Those who get out of bed by 7am are more likely to be thinner and happier.
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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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Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
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Bats sleep 18-20 hours per day.
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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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Cows can sleep standing up, but they can only dream lying down.
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