Back in January, I made an informal pact with myself to read more non-fiction. So far I have been able to read at least one non-fiction book a month. Although Why We Sleep did not fulfill the promise of its subtitle, “Unlocking the Power of Sleep and Dreams,” it did present excellent research into the field of sleep study.
Most importantly, it emphasized to me the importance of getting enough sleep:
“Routinely sleeping less than 6 or 7 hours a night demolishes your immune system, more than doubling your risk of cancer.” Other conditions that are affected by one’s sleep are Alzheimer’s, diabetes, coronary blockages, cardiovascular disease, stroke, and congestive heart failure.
Various stages of sleep are discussed as are the development of sleep patterns across an individual’s lifetime. We may say, “I slept like a baby,” but it is not impossible for an adult brain to mimic a baby’s sleep cycle. Adult needs are different from those of an infant, a child, a teen, or an elderly person.
Walker’s informative book confirms what I’ve glanced at in magazines and newspaper articles, but now I have a firmer understanding of sleep and lifestyles than I did before reading this book.

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