https://blogs.mercola.com:443/sites/vitalvotes/archive/2026/08/05/is-your-brain-working-the-night-shift-while-you-sleep.aspxSleep may look restful from the outside, but your brain is anything but idle. New research found that during rapid eye movement (REM) sleep — the stage most closely associated with vivid dreaming — the brain dramatically increases blood flowenCommunityServer 2008.5 SP1 (Debug Build: 31106.3070)