Andrew Huberman: My Exact Routine To Optimize Brain & Body, I Do All Of These Every Day!
with Andrew Huberman
3 Sep 20265 min read1h 55m
TL;DR
Andrew Huberman argues that 10 free, sequenced daily protocols — anchored by morning sunlight, hydration, and timed exercise — synergize to produce a healthy cortisol curve that drives mood, focus, metabolic health, and longevity. He reveals that most people's cortisol is backwards: too low in the morning and too high at night, largely because of artificial light after 6 p.m. — a pattern that, per UK Biobank data, meaningfully raises cancer rates and shortens lifespan. Fixing the curve costs nothing: get bright light in your eyes within the first hour of waking, and keep nights genuinely dark.
Key Moments
Andrew Huberman
“Your screens are not nearly bright enough to kickstart this increase in cortisol in the morning, but they are very capable of increasing your cortisol levels at night because the this low level of cortisol makes you vulnerable to big increases in cortisol.”
Huberman describing the asymmetric and diabolical effect of screens — too dim to help you in the morning, harmful enough to spike cortisol at night.
“smokers who got a lot of sunlight, this isn't my favorite study, but um but we have to admit it's there, lived longers than non-smokers who didn't get enough sunlight.”
Huberman citing a Swedish study to illustrate the outsized longevity impact of sunlight exposure, even relative to smoking.
“the studies on night shift work, barring some of the more extreme ones, was most of them were on how many people after 6 p.m., right, are on devices getting artificial LED exposure or doing activities besides eating and socializing with their family or in bed.”
Huberman explaining that anyone using devices after 6 p.m. effectively qualifies as a night shift worker with associated health risks.
“When you get some sunlight in your eyes in the late part of your day, let's just say in the last third of your day, you buffer those cells in your eye against the negative effects of artificial light at night. This is your Netflix inoculation, as I call it.”
Huberman introducing his concept of using late-afternoon sunlight as a protective buffer against evening screen damage.
“Deliberate cold exposure does not raise cortisol. This much. It's amazing to me that the same people that are suggesting moderate to high-intensity exercise are saying that deliberate cold exposure raises cortisol. is simply not true.”
Huberman pushing back on the popular claim that cold plunges spike cortisol, clarifying they raise adrenaline and dopamine instead.
Andrew Huberman is a neuroscientist and professor at Stanford University School of Medicine, where he runs the Huberman Lab studying brain development, plasticity, and neural regeneration. He is widely known for his popular Huberman Lab podcast, which translates neuroscience research into actionable health and performance protocols. His long-awaited book, Protocols: An Operating Manual for the Human Body, distills decades of research into practical daily routines.
Takeaways
1
Late-afternoon sunlight is a 'Netflix inoculation' against screen damage Getting outdoor daylight in the final third of your day buffers the eye's cells against the harmful effects of artificial light at night, dampening the cortisol and blood glucose disruption from evening screens. Huberman calls this the 'Netflix inoculation.' Notably, this buffering effect does not work for adolescents.
2
Morning cortisol peak determines everything downstream A high cortisol peak in the first hour of waking sets up low cortisol at night — the prerequisite for deep sleep. Most people have a flat or low morning peak, which means daily stressors produce bigger and longer cortisol spikes, and melatonin doesn't function properly at night. Viewing bright daylight within 60 minutes of waking is the primary lever to fix this.
3
Red light on skin slashes blood glucose spikes by 25%+ Glen Jeffrey's UCL lab showed that shining long-wavelength red light on people's backs during a glucose tolerance test reduced the peak blood glucose rise by more than 25%. The mechanism is mitochondrial: red and infrared light penetrate up to 8 cm into the body, improving how mitochondria handle electrons. Ordinary sunlight delivers this for free.
4
Screens too dim to help mornings, harmful enough at night Phone and laptop screens lack the lux to trigger the morning cortisol awakening response, but at night — when baseline cortisol is low — even modest screen brightness is sufficient to produce a significant cortisol spike. This asymmetry means screens give you none of the benefits of bright light and all of the nighttime costs.
5
Anyone on devices after 6 p.m. is effectively a night shift worker The landmark studies on night shift work — higher cancer rates, shorter lifespan, metabolic dysfunction — were largely conducted on people using artificial LED devices or doing non-winding-down activities after 6 p.m. at home. You don't need to work all night to accumulate the biological damage; evening screen use is sufficient.
6
Cold plunges raise dopamine, not cortisol — unlike exercise Huberman directly challenges the popular conflation of cold exposure and cortisol: deliberate cold produces trivial cortisol increases but large surges in adrenaline, norepinephrine, and dopamine. Weight training for 45 minutes near failure, by contrast, triples or quadruples cortisol. The two stressors have fundamentally different hormonal signatures.
7
Exercise in first 3 hours synergizes with the cortisol curve Cardio or resistance training in the first three hours of the day produces a large, appropriately timed cortisol spike that synergizes with the morning cortisol awakening response. Huberman structures his own week as alternating lifting and cardio days — three of each — with one long slow cardio session, one moderate, and one max-heart-rate interval session.