Key Insights on Neuroscience

Glymphatic clearance during sleep requires side sleeping with head slightly elevated to wash brain waste through cerebrospinal fluid

• Cold plunge actually reduces cortisol levels despite internet claims - adrenaline and dopamine increase while cortisol decreases
• Bad habits require top-down prefrontal cortex control, but spiritual practices and higher power concepts provide additional neurobiological support
• "Your brain can think at about 4,000 words a minute - the same rate of fire as an M134 machine gun" - highlighting the massive gap between thought speed and communication ability

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Gary Brecka 2 episodes