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More sleep would make us happier, healthier and safer
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/high-angle-view-of-young-man-with-kitten-sleeping-on-bed-at-home-748587551-5ea78fa9e8cd4c72af67e71877c0519d.jpg "Pros and Cons of a Polyphasic Sleep Schedule")
Pros and Cons of a Polyphasic Sleep Schedule
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How Much Sleep Do You Need? | Everyday Health
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Slept late: how much sleep is optimal? - Denk Nutrition
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Sleeping more than 6.5 hours may cause mental decline | The Independent
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Sleep quality, duration, and consistency are associated with better academic performance in college students | npj Science of Learning
In U.S., 40% Get Less Than Recommended Amount of Sleep
Napping: the expert's guide | Health & wellbeing | The Guardian
How long is optimal for a short nap?, keep it short: for most
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How To Power Nap - Amerisleep
