#1042 - Dr Andrew Huberman - How to Reclaim Your Brain in 2026

What It Covers

Dr. Andrew Huberman explains cortisol's misunderstood role in sleep and wakefulness, revealing how morning cortisol spikes drive healthy circadian rhythms while evening elevation disrupts sleep, plus strategies for focus, habit formation, and the neuroscience of faith.

Key Questions Answered

• •Cortisol awakening response: Cortisol naturally peaks in the morning to wake you up, not as stress but as energy mobilization. Viewing bright light within the first hour after waking increases this spike by up to 50%, establishing the circadian rhythm that keeps cortisol low in the afternoon and evening for better sleep.
• •Glymphatic clearance optimization: The brain clears metabolic waste during sleep through the glymphatic system, which works best when sleeping on your side with head slightly elevated. This position allows cerebrospinal fluid to flush toxins from brain tissue, explaining why poor sleep causes facial puffiness and brain fog from accumulated waste products.
• •Pre-work sensory deprivation: Thoughts are constructed by layering sensory memories onto seed concepts. Limiting sensory input for 10-15 minutes before focused work prevents competing thoughts from fragmenting attention. Boring breaks between work sessions allow the brain to consolidate learning rather than constantly processing new stimuli from devices.
• •Starchy carbohydrates for sleep: Low carbohydrate diets elevate baseline cortisol because the body must mobilize stored glucose. Adding starchy carbohydrates like rice or oatmeal to meals, especially in the evening, suppresses cortisol naturally and helps many people fall asleep faster by signaling energy availability to the brain.
• •Eye movement sleep technique: Moving eyes slowly side to side, then in circles, then looking down toward the nose while exhaling helps initiate sleep by disengaging the vestibular system's awareness of body position. This technique mimics the natural process of forgetting physical sensations that occurs when transitioning from wakefulness to sleep.