Conditions & Recovery · ScienceDaily Staying Healthy · September 22, 2026

Coffee doesn’t have to keep you awake to disrupt your sleep

Caffeine may make sleep less restorative even when you fall asleep normally and stay in bed for eight hours, with EEG recordings revealing fewer of the slow brain waves associated with deep sleep. Individual sensitivity varies dramatically, meaning even caffeine consumed earlier in the day could affect nighttime recovery for some people.

Originally published by ScienceDaily Staying Healthy. We curate and add context; they did the reporting.

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