Why Do We Need to Sleep?
Newswise – One of the biggest complaints that doctors hear is insomnia. A recent poll by the National Science Foundation found that only 50% of Americans get a good night’s sleep a few nights each week. Why do we need to sleep, anyway? Sleep researchers are studying animals in order to figure this out. For instance, they have found birds and reptiles that can put half their brain to sleep while keeping the other half alert to watch for predators. They also want to know how cats can sleep so deeply, yet spring instantly awake. If we could find a medicine that could do that for us, our sleep problems would be over.
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