From 95% to 99%: The Stoic Executive’s Guide to Supplement ROI

Most conversations about supplements are useless.

They start too early, aim too low, and ask the wrong question.

This is not a beginner’s guide. This is not “eat your vegetables” or “drink more water.” This is a discussion for someone who has already done the hard part.

You wake up early.You train consistently.Alcohol is gone.Food is clean.Sleep is a priority.

In other words: the foundation is already built.

So the real question becomes uncomfortable, almost heretical:

When you’re already operating at the 95th percentile of discipline, does supplementation actually move the needle — or are you just creating expensive urine?

This episode of Coordinated with Fredrik was built to answer that question with one lens only: return on investment.

Not vibes. Not biohacker cosplay. ROI.

The Core Thesis: No Magic Pills, but Real Feature Upgrades

After combing through meta-analyses, randomized controlled trials, and clinical protocols published through early 2025, the answer is not a naïve yes.

It’s a qualified yes.

Supplements do not replace fundamentals. They do not compensate for poor sleep, weak conditioning, or a chaotic life. But even a perfect modern lifestyle leaves gaps — gaps created by:

* Soil depletion

* Indoor work

* Chronic cognitive load

* Latitude and lack of sun

* Stress-induced mineral loss

The opportunity lies in biological arbitrage: small chemical inputs that produce disproportionate output for a high-functioning executive.

Out of all the noise, four compounds consistently survive scrutiny.

Not exciting. Not exotic. Just effective.

The Core Four

1. Creatine: Decision Fatigue Insurance

Creatine has undergone one of the most dramatic rebrandings in modern science.

Once dismissed as “gym bro powder,” it is now increasingly understood as cognitive fuel.

The reason is simple: the brain is an energy-hungry organ. When ATP runs low, processing speed, attention, and working memory degrade. Creatine acts as the fastest phosphate recycling system in the human body — a rapid charger for neural energy.

Recent meta-analyses show statistically significant improvements in:

* Short- and long-term memory

* Attention span

* Processing speed

The benefits are strongest under metabolic stress: sleep deprivation, high cognitive load, intense work periods. In one striking study, a single high dose of creatine largely preserved cognitive performance during 21 hours of wakefulness.

For a CEO, this is not about muscle.

It’s about staying sharp when the margin for error is thin.

Protocol

* Creatine monohydrate only

* 3–5 g daily

* No loading phase

* Consistency over intensity

Kidneys: safe.Hair loss: unsupported by evidence.Marketing variants: ignore them.

2. Magnesium: The Off Switch

If creatine is about output, magnesium is about recovery.

Magnesium quietly governs over 300 enzymatic reactions, including energy metabolism, neural signaling, and muscle relaxation. Yet 50–60% of adults in the Western world are insufficient.

Why?

* Mineral-depleted soil

* Stress-driven magnesium loss

* Caffeine and training increasing excretion

For high performers, magnesium deficiency is almost structural.

Recent imaging studies link adequate magnesium intake to structurally younger brains, fewer white matter lesions, and improved cognitive resilience. One targeted form, magnesium L-threonate, has shown particularly strong effects on brain magnesium levels due to its ability to cross the blood–brain barrier.

Choosing the form

* L-threonate: cognitive longevity, focus, brain health

* Bisglycinate: sleep quality, relaxation, recovery

* Oxide: avoid (unless you want a laxative)

Take it in the evening. Make it a ritual.

3. Omega-3s: Structural Maintenance of the Brain

Omega-3s are not supplements. They are building materials.

EPA and DHA are structural components of neuronal membranes. Their status can be measured directly through the omega-3 index — a four-month rolling average of membrane composition.

Targets matter:

* <5%: common, suboptimal

8%: associated with cardiovascular and cognitive protection

* 10–12%: what aggressive optimizers aim for

Higher omega-3 index levels correlate with:

* Reduced cardiovascular events

* Slower cognitive aging

* Improved mood stability

Plant-based omega-3s (ALA) do not convert efficiently. For DHA, conversion is effectively negligible. If you don’t eat fatty fish, supplementation is non-negotiable.

Key insight: do not guess. Test. Adjust dosage based on blood data.

Potency vs purity is a real trade-off:

* Fish oil: higher doses, contamination risk

* Algae oil: cleaner, lower doses

* Fish roe: superior bioavailability, lower required intake

There is no ideology here. Only measurement.

4. Vitamin D: System-Wide Regulation

Vitamin D is misclassified. It is not a vitamin in function — it is a hormonal regulator.

It directly influences the expression of over 1,000 genes. Above the 37th parallel, winter synthesis is effectively zero. For Northern Europe, deficiency is structural.

Beyond bone health, recent data links adequate vitamin D levels to:

* Slower telomere shortening

* Lower dementia incidence

* Improved immune and metabolic regulation

The mistake is dosing without context.

High-dose vitamin D without:

* Magnesium (cofactor)

* Vitamin K2 (calcium traffic control)

…creates risk.

Safe stack

* Vitamin D3: often 5,000 IU+ (test to confirm)

* Vitamin K2 (MK-7): 100–200 mcg

* Adequate magnesium intake

This is an ecosystem, not a pill.

The Stoic Frame: Don’t Major in the Minors

Supplements are the final 5%.

They polish the machine — they do not build it.

Zone 2 cardio.Sleep.Strength training.Consistency over decades.

Miss a day? Nothing breaks.Forget a week? No catastrophe.

The stoic advantage is restraint.

The goal is not obsessive optimization. The goal is protecting cognitive capital — the asset that compounds everything else you do.

The real biohack isn’t copying anyone’s protocol.

It’s knowing your own numbers.

Measure. Adjust. Repeat.

That’s the whole game.

This post is adapted from the podcast episode transcript and reflects the discussion as presented in Coordinated with Fredrik .

This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit frahlg.substack.com