Can some people just get by with less sleep every night? Here's what the research says about the brains of those chronically short on zzz's.
Some people sleep much less than the recommended seven hours yet appear to experience no daytime sleepiness.Short sleepers who do not complain about daytime sleepiness have slightly impaired cognitive function.The recommended amount of sleep scientists believe we need each night depends on age. Infants sleep up to sixteen hours each day, and the amount suggested declines with aging. The recommendation for adults is now seven or more hours each night.
We all know people who sleep much less than the recommended seven hours yet appear to experience no daytime sleepiness. This is contrary to predictions that short sleepers face increased risk of impaired brain health and cognitive function. Are these short sleepers more resistant to the negative effects of sleep loss?
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