In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
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Lack of water is the #1 trigger of daytime fatigue.
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The average person falls asleep in seven minutes.
115
You burn more calories sleeping than you do watching television.
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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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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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