Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
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The human brain is more active during sleep than during the 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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You burn more calories sleeping than you do watching television.
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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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47% of people have a nightmare at least once a month.
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"Dysania" is the state of finding it hard getting up out of bed in the morning.
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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".
11