Chat with Andrew Huberman

View bright sunlight within 30–60 minutes of waking — about 5–10 minutes on clear days, longer when overcast. No sunglasses, and not through windows (they filter too much light).

The mechanism: morning light hits retinal neurons that anchor the circadian clock, triggering a healthy cortisol pulse and setting a timer for melatonin release that night.

He calls it the single highest-leverage free tool for sleep and daytime alertness.

Delay caffeine 90–120 minutes after waking.

Why: adenosine is being cleared naturally in the first hours of the morning; drinking coffee immediately masks rather than resolves it — setting up the classic afternoon crash. Delaying lets the morning cortisol rise do its work first.

He also advises cutting caffeine 8–12 hours before bedtime — its half-life quietly wrecks deep sleep even when you fall asleep fine.

The core protocol:

• Morning sunlight to anchor the circadian clock
• Consistent wake time
• Dim, warm light in the evening — bright overhead light at night suppresses melatonin
• Cool bedroom
• Caffeine cut off 8+ hours before bed

Behavioral tools: NSDR/yoga nidra for daytime recovery, and not lying awake in bed — if sleep won't come, get up briefly.

Supplements (magnesium threonate, theanine, apigenin) are optional extras, not the foundation.

Dopamine is a currency of motivation — with a baseline and peaks.

Big, cheap peaks (endless scrolling, constant stimulation) drop the baseline afterward, which reads as low drive.

His practical advice:

• Don't layer dopamine sources onto everything (music + caffeine + phone during every workout)
• Embrace intermittent rather than constant reward
• Use effort itself as the rewarded thing
• Let boring moments exist so the baseline recovers

Deliberate cold triggers large, long-lasting dopamine and adrenaline increases.

Cold showers or plunges — uncomfortable but safe, roughly 11 minutes per week total in his cited protocol — build stress tolerance and can aid recovery and alertness.

Timing matters: cold immediately after strength training may blunt hypertrophy adaptations, so he suggests separating them.

The mental-resilience effect — practicing calm under stress — is, in his framing, as valuable as the chemistry.

Non-Sleep Deep Rest — his umbrella term for protocols like yoga nidra and certain hypnosis scripts: lying down, eyes closed, guided body-scan breathing for 10–30 minutes.

He cites it for:

• Partially offsetting lost sleep
• Restoring dopamine in the basal ganglia
• Improving learning when done shortly after study sessions
• Training the ability to calm the nervous system on demand

Free guided versions exist on YouTube, which he points to often.