Circadian Heliotherapy

Restoring Human Health and Sovereignty Through Circadian Alignment

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The Mission

Your health was never meant to be outsourced.

My father died of heart disease. The medical system that was supposed to protect him managed symptoms, prescribed interventions, and never addressed root cause. That loss sent me into the primary literature on my own, outside of institutions and credential programs, and what I found was circadian biology.

The circadian system governs mitochondrial function, hormone cascades, metabolic partitioning, DNA repair, immune regulation, and disease risk. It is not one factor among many. It is the regulatory layer that determines whether everything else works or doesn't.

I don't hand people protocols. I teach first principles. The mechanisms behind why morning light resets the master clock, why meal timing changes metabolic outcomes, why darkness at night drives systemic repair. When you understand the system, you stop needing someone to tell you what to do.

The Core Distinction

Restoration vs. override. This is the line that separates what I teach from everything else.

Restoration

Your skin produces its own melatonin through a circadian-driven pathway. Your pancreatic beta cells regulate insulin on a clock-dependent schedule. Your liver partitions metabolic substrates differently at 8 AM than at 10 PM. Your DNA repair enzymes oscillate with the light and dark cycle to peak when UV damage is most likely.

These systems are already built. They don't need to be replaced. They need the correct inputs: light in the morning, full-spectrum exposure during the day, darkness at night, meals timed to the metabolic window. Fix the inputs and the system self-corrects.

Override

Supplemental melatonin suppresses your body's own production through negative feedback. Retinol overrides the skin's endogenous repair architecture. Stimulants override the cortisol awakening response. Sleep drugs override the circadian sleep gate.

The entire pharmaceutical and supplement model is built on a single premise: bypass the system, sell the bypass monthly, and never ask why the system broke in the first place. Override gets purchased. Restoration gets taught once.

Every health intervention either works because it aligns with circadian biology or fails because it doesn't. That is not a claim made lightly. It is what the primary literature supports, from peripheral clock research in Current Biology to melatonin receptor studies in PNAS to DNA repair oscillation data in Journal of Biological Rhythms.

What This Is Not

Not another supplement stack. Not another biohack. Not another thing your doctor will dismiss.

This work sits in a category most people haven't encountered before: rigorous circadian science applied as a first-principles health framework.

Not centralized medicine, which manages symptoms, prescribes interventions, and profits from chronicity without ever addressing why the system broke in the first place.

Not biohacker optimization, which fetishizes gadgets, supplements, and quantified outputs while missing the foundational layer that makes those tools relevant or irrelevant.

Not influencer health advice, which spreads reductionist nutrition and exercise dogma disconnected from the circadian context that determines metabolic outcomes.

Not permission-based health, which keeps people outsourcing decisions about their own biology to institutions that have no incentive to make them independent.

The 80/20 Circadian Course

Deep sleep. Stable energy. Fat loss that doesn't require white-knuckling.

You've read the threads. You've tried the supplements. You've tracked your sleep with three different devices and you still wake up tired. The problem isn't effort. It's order of operations. A small number of circadian inputs drive the majority of your health outcomes. This course identifies those inputs and sequences them correctly.

01
The Circadian System
The master regulatory layer. SCN entrainment, peripheral clocks, zeitgeber hierarchy. The foundation that makes every other health decision click or collapse.
02
The 80/20 Light Rules
The single biggest lever. Melanopsin photoreception, spectral sensitivity, and exactly which light exposures move the needle morning, midday, and evening.
03
Sleep. Fixed Without Forcing It.
Your sleep problem is a daytime problem. Fix the light and dark signal, fix the circadian sleep gate, and sleep consolidates on its own.
04
Metabolism and Fat Loss
Same food, different timing, different metabolic outcome. Melatonin-mediated insulin suppression, temporal metabolic partitioning, and why meal timing is a circadian variable.
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Real Results

What happens when circadian biology is applied correctly.

"My health is already improving applying the knowledge. Big early change is visual acuity. If I ever practice my integrative sports medicine again it will be a circadian centered practice."

@SirPalmeroy

Course Student

"Working with Zaid changed how I think about my health entirely. Optimizing my circadian rhythm and light environment shifted my energy, my sleep, and my body composition from upstream inputs I had been ignoring."

Kyle

Entrepreneur

"I sleep like a baby now. My deep and REM sleep improved dramatically, my metabolism feels like a furnace, and I have steady energy all day without stimulants."

Alex

Software Engineer

"Within two weeks I dropped a full pants size and started sleeping much better. I finally have the daytime energy to get through everything I need to do."

Richard

New Brunswick

"My body fat dropped from 29% to 23% and I'm continuing to make progress. My sleep and consistency are way better now."

Said

Financial Services Executive

"My afternoon slump vanished and sleep got fixed. One of the best courses to fix your circadian rhythm. Now I understand why he didn't give a big list of supplements."

@BhavanChand

Course Student

As Heard On

Guest appearances on shows that go deep.

Conversations on circadian biology, light as medicine, health sovereignty, and the primary literature that changes how people understand their own bodies.

Grounded Wellness by Primally Pure
Grounded Wellness by Primally Pure
Circadian Biology Expert on The Missing Piece of Modern Wellness
Watch Episode
Mark Bell's Power Project
Mark Bell's Power Project
Circadian Biology Hacks for Energy, Sleep, and Recovery
Watch Episode
Santa Cruz Medicinals
Santa Cruz Medicinals
This Is What Happens When You Don't Get Enough Sunlight
Watch Episode
Fitness Wisdom Podcast
Fitness Wisdom Podcast
Does Sunlight Cause Skin Cancer? What Your Dermatologist Won't Tell You
Watch Episode
The Decentralised Health Podcast
The Decentralised Health Podcast
The Light Bringer: The Science and Spirit of Circadian Living
Watch Episode
Dr. Max Gulhane
Dr. Max Gulhane
Sunbathing Safely: Why Your Circadian Rhythm Is Key
Watch Episode

Learn

Where I teach circadian biology.

Free education across every platform. Research-driven articles, daily insights, visual breakdowns, and long-form conversations built on primary literature.

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Long-form deep dives built on primary literature. The intellectual home base.
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Daily circadian insights, research threads, and the arguments that start conversations.
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Visual education, sunrise content, and the aesthetic side of circadian living.
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The 2AM Podcast
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Long-form conversations on circadian science, health sovereignty, and going deeper.

The Circadian Classroom

Join 10K+ people learning circadian first principles.

Research-backed deep dives on the circadian system, the regulatory layer governing sleep, metabolism, DNA repair, and disease risk. No supplement lists. No hacks. Just the science that actually moves the needle.