SMRTR Science & EngineeringAug 3, 2026Nautilus

How Dreaming Drains Your Energy

SMRTR summary

Japanese neuroscientists discovered that during REM sleep, brain energy levels drop even as blood flow increases, creating a puzzling paradox. Blood vessels begin surging 50 seconds before dreaming starts, suggesting circulation controls brain activity, not just the other way around. This could reshape understanding of sleep disorders and brain diseases.

SMRTR provides this summary for quick context. The original article belongs to Nautilus.

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