In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
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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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Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
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