There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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If you hold farts in during the day, they'll just come out when you sleep.
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The strangers in your dreams are actually people that you've seen in real life.
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The human brain is more active during sleep than during the day.
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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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The harder you concentrate on falling asleep, the less likely you are to fall asleep.
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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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