There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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Cows can sleep standing up, but they can only dream lying down.
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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 average cat sleeps about 2/3 of the day.
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Lack of water is the #1 trigger of daytime fatigue.
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Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
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