Science & ClimateScienceDaily1 min read9/22/2026 (2h ago)

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

Coffee doesn’t have to keep you awake to disrupt your sleep
60-Word AI Digest

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.

Key Takeaways

  • 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.
  • Full details and original dispatch available below.

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.

Original Publisher Attribution

This summary was curated from ScienceDaily.

Read Original on ScienceDaily
Coffee doesn’t have to keep you awake to disrupt your sleep — Loop60