New study finds moderate sleep best for brain
chinadaily.com.cn |
Updated: 2021-10-22 08:11
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Older adults who sleep less than 5.5 hours or more than 7.5 hours per night have a decline in cognitive performance, according to a new study published Wednesday in the journal Brain. Older people's cognitive performance was stable over time when they slept a moderate amount, roughly 6-7 hours per night.
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