The human brain is more active during sleep than during the day.
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Lack of water is the #1 trigger of daytime fatigue.
148
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
If you hold farts in during the day, they'll just come out when you sleep.
16
"Dysania" is the state of finding it hard getting up out of bed in the morning.
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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.
15