Lack of water is the #1 trigger of daytime fatigue.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
104
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
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
The average person falls asleep in seven minutes.
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