Researchers find genes important to sleep

For many animals, sleep is a risk: foraging for food, mingling with mates and guarding against predators just aren't possible while snoozing.

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<p><a href="http://www.physorg.com/news154540566.html">Researchers find genes important to sleep</a></p> <p>For many animals, sleep is a risk: foraging for food, mingling with mates and guarding against predators just aren't possible while snoozing.</p>