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Over the last 15 years, I’ve built companies and spent millions testing what actually upgrades human performance, and I can tell you that mental fatigue has absolutely nothing to do with willpower. In this video, I break down the exact neurochemistry of deep focus. When your brain runs out of dopamine, norepinephrine, and acetylcholine, or gets bogged down by oxidative stress, your executive function collapses. The pharmaceutical industry wants you hooked on expensive stimulants that only treat the symptoms, but the real biological fix is a common antioxidant: Vitamin C.

I explain how your brain hoards Vitamin C at levels 100 times higher than your blood, how to bypass the blood-brain barrier using SVCT2 transporters, and why eating sugar before you take it completely blocks its absorption. You'll also learn the exact biohacking stack—including NAC, CoQ10, PQQ, and L-theanine—you need to recycle this molecule, protect your mitochondria, and maintain effortless, razor-sharp focus all day long.

Thank you to our sponsors!

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Timestamps:

00:00 – Trailer

00:21 – Focus Is Biology

01:53 – Brain Chemistry Explained

05:33 – Vitamin C Revealed

07:09 – How to Dose

08:18 – Absorption Barriers

09:31 – Optimize Uptake

10:00 – Oxidative Stress Problem

11:00 – Stack for Deeper Focus

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