Dr Andrew Huberman's Morning Routine Protocol from Diary of a CEO

Dr Andrew Huberman's appearance on The Diary of a CEO was a landmark episode for the podcast. The Stanford neuroscientist broke down the exact morning routine he follows — and more importantly, the peer-reviewed science behind every single step. Unlike most morning routine advice that amounts to "wake up early and journal," Huberman gave viewers a protocol grounded in neurobiology, circadian science, and hormonal optimization.

This episode became one of the most shared and bookmarked in the podcast's history, with millions of viewers implementing what's now commonly called the "Huberman Morning Protocol." Here's the complete breakdown of every step, why it works, and how to adapt it to your own life.

Step 1: Wake Up and Get Sunlight Within 30 Minutes

The single most important habit Huberman discussed with Steven Bartlett was early morning sunlight exposure. Within the first 30 minutes of waking, Huberman recommends getting outside and exposing your eyes to natural light for 5 to 10 minutes on a clear day, or 15 to 20 minutes on an overcast day.

"Viewing sunlight within the first hour of waking is the most powerful lever you have for setting your circadian rhythm, improving your mood, and optimizing your sleep that night."
— Dr Andrew Huberman, The Diary of a CEO

The science here is precise: photons of light enter the eyes and activate specialized retinal ganglion cells that send signals directly to the suprachiasmatic nucleus — the brain's master clock. This triggers a cortisol pulse that wakes you up properly and starts a timer that will trigger melatonin release approximately 14 to 16 hours later, helping you fall asleep naturally that night.

Huberman was emphatic that artificial light — including phone screens and indoor lighting — is not a substitute. The intensity of outdoor light, even on a cloudy day, is orders of magnitude greater than any indoor light source. He told Bartlett that this single habit, done consistently, can be more impactful than any supplement or sleep gadget.

Step 2: Delay Caffeine by 90 to 120 Minutes

This was perhaps the most controversial recommendation from the episode — and the one that generated the most discussion online. Huberman advises waiting 90 to 120 minutes after waking before consuming caffeine.

The reasoning is rooted in adenosine biology. When you wake up, adenosine — the molecule that creates sleep pressure — is still being cleared from your system. If you drink coffee immediately, caffeine blocks the adenosine receptors before the adenosine has been fully cleared. The result: when the caffeine wears off in the afternoon, all that uncleared adenosine floods your receptors at once, creating the infamous afternoon crash.

By waiting 90 to 120 minutes, you allow your body to naturally clear adenosine through the morning cortisol pulse and sunlight exposure. When you then consume caffeine, it works with a clean system — and the afternoon crash largely disappears.

Huberman acknowledged to Bartlett that this is the hardest habit for people to adopt. His practical advice: if you can't do the full 90 minutes, even waiting 60 minutes makes a meaningful difference. And if you absolutely cannot function without immediate caffeine, he suggested starting with a small amount (half a cup) and having the full serving later.

Step 3: Cold Water Exposure

Huberman's protocol includes deliberate cold exposure in the morning — typically a cold shower of 1 to 3 minutes or a cold plunge at temperatures between 40°F and 60°F (4°C to 15°C).

The neuroscience behind this is compelling. Cold exposure triggers a massive release of norepinephrine (up to 200-300% above baseline) and dopamine (up to 250% above baseline). These are the brain's primary alertness and motivation chemicals. Unlike caffeine, which blocks sleepiness, cold exposure actively promotes wakefulness and drive.

"Cold water exposure is one of the few things that reliably and substantially increases dopamine for extended periods — we're talking hours, not minutes. It's like a natural performance-enhancing drug."
— Dr Andrew Huberman, The Diary of a CEO

Critically, Huberman explained that the dopamine increase from cold exposure is long-lasting — effects can persist for 3 to 5 hours after the exposure. This makes it a fundamentally different tool than stimulants, which create a spike followed by a crash. The cold creates a sustained elevation.

For those who find cold plunges intimidating, Huberman told Bartlett that ending a warm shower with 30 to 60 seconds of cold water captures most of the benefit. The key is that it should feel uncomfortable — if it's easy, the temperature isn't cold enough to trigger the neurochemical response.

Step 4: Morning Exercise — Timing Matters

Huberman exercises in the morning, and he explained to Bartlett why the timing is neurologically significant. Morning exercise — particularly resistance training or high-intensity work — amplifies the cortisol pulse that naturally occurs upon waking. This isn't the chronic stress cortisol that causes health problems; it's the acute, pulsatile cortisol that promotes alertness, immune function, and metabolism.

He structures his training week with resistance training on some days and cardiovascular work on others, typically training for 60 to 75 minutes. The specific workout matters less than the consistency and timing. Morning exercise synchronizes with your circadian biology in ways that afternoon or evening exercise cannot replicate.

For people who prefer evening workouts, Huberman was reassuring: exercising at any time is better than not exercising. But if you have the flexibility to train in the morning, the circadian benefits compound with the other elements of the protocol.

Step 5: Strategic Supplementation

While Huberman was clear that supplements are optional and should never replace the foundational habits, he did share several that he uses as part of his morning protocol:

Electrolytes — sodium, potassium, and magnesium in water first thing in the morning. After 7-8 hours of sleep, you're dehydrated, and proper hydration is essential for cognitive function and exercise performance.

Omega-3 fatty acids (EPA) — Huberman takes a high-EPA fish oil supplement for its mood-supporting and anti-inflammatory properties. He emphasized that the research on EPA specifically (not just generic "fish oil") is strong for mood regulation.

Vitamin D3 + K2 — particularly important for those who don't get adequate sunlight, which includes most people who work indoors. D3 supports immune function, bone health, and mood, while K2 ensures calcium is directed to bones rather than arteries.

The Non-Negotiables vs. The Nice-to-Haves

When Bartlett pushed Huberman to identify which parts of the routine were most essential, the neuroscientist was clear about his hierarchy. If he could only do three things every morning for the rest of his life, they would be:

1. Sunlight exposure — the foundation of circadian health and the single highest-leverage habit.

2. Delayed caffeine — relatively easy to implement and dramatically improves energy consistency throughout the day.

3. Some form of physical movement — even a 10-minute walk outdoors (which also captures sunlight) makes a meaningful difference.

The cold exposure, specific supplementation, and precise exercise programming are optimizations built on top of these three pillars. Huberman was adamant that people should not feel overwhelmed by trying to implement everything at once. Start with sunlight. Add delayed caffeine. Then layer in additional elements over weeks and months.

Why This Protocol Works: The Circadian Science

What separates Huberman's morning routine from the thousands of other "morning routine" articles on the internet is that every element is designed to work with your body's circadian biology rather than against it. The full Huberman DOAC episode made clear that your body runs on roughly 24-hour cycles controlled by light, temperature, food timing, and social cues.

Most people inadvertently sabotage their circadian rhythm by checking their phone in bed (artificial light at the wrong time), drinking coffee immediately (masking adenosine), staying indoors all morning (missing the light signal), and exercising at inconsistent times. Each of these disruptions alone is minor. Together, they create a state of chronic circadian misalignment that manifests as poor sleep, low energy, brain fog, and mood instability.

Huberman's protocol systematically corrects each of these disruptions. Sunlight sets the clock. Delayed caffeine works with adenosine clearance. Cold exposure triggers alertness chemicals. Morning exercise reinforces the cortisol rhythm. The result is a day where energy is high and stable from morning through evening, and sleep comes naturally at night.

Adapting the Protocol to Your Life

Huberman emphasized throughout his Diary of a CEO conversation that rigid adherence to every detail is less important than understanding the principles and adapting them to your circumstances.

If you work night shifts, your "morning" sunlight should come at the start of your waking period, not at dawn. If you live in a northern climate with limited winter sunlight, a 10,000 lux light therapy lamp positioned at eye level can partially substitute. If you have young children and can't delay caffeine for 90 minutes because you need to function at 5 AM, do what you can.

The protocol is a framework, not a religion. The underlying principle is simple: align your behaviors with your biology, and your biology will reward you with better energy, mood, focus, and sleep.

For more science-backed health advice from the podcast, explore our guides to DOAC health tips, the Matthew Walker sleep episode, and Steven Bartlett's own morning routine.