Goldilocks sleep: brains work best with a balanced routine
TL;DR
A study of 458 adults links steady sleep schedules to better memory and thinking, but finds BDNF levels follow an inverted U-shaped curve: highest when sleep regularity is moderate, lower with both erratic and overly rigid routines. The result suggests a Goldilocks zone for sleep—steady but flexible—to support brain health and potentially reduce dementia risk.
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