There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
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The average cat sleeps about 2/3 of 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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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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