Home Videos Harvard Neuroscientist: You’re Losing 70% of Your Deep Sleep (Here’s What That Means) Harvard Neuroscientist: You’re Losing 70% of Your Deep Sleep (Here’s What That Means) Supplement Guy Apr 30, 2026 comments off Tweet on Twitter Share on Facebook Pinterest This is my first link This is my second link This is my third link Baland Jalal brain during sleep can you control dreams deep sleep dream recall emotional healing during sleep glymphatic system Harvard neuroscientist hypnagogic jerks lucid dreaming narcolepsy nightmares explained noradrenaline and sleep PTSD and sleep REM rebound REM sleep sleep and creativity sleep and depression sleep and emotions sleep and memory sleep architecture sleep paralysis sleep spindles stages of sleep thomas delauer