Live Building an Advanced Muscle Building Protocol | Anthony Castore and Optimal Nathan pt 2

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Most guys getting lean reach straight for a fat burner and wonder why they stall, lose muscle, and feel like garbage. In Part 1 of this Round Table, Drew sits down with two of the most obsessive coaches in the enhancement space — Optimal Nathan and Anthony Castore — to build something very different: a no-stone-unturned protocol for getting shredded to the bone. This is the "money is no object, everything's been tested, leave nothing on the table" stack for advanced athletes, executives and high performers.

Key Takeaways

• Why 6–8 weeks of mitochondrial prep before a cut makes fat loss faster and protects muscle
• Nathan's 4-block prep sequence of cleanup, repair, redox, and biogenesis
• Why low insulin "takes the brakes off" stored fat, and why yohimbine is a day-one stubborn-fat tool, not a last resort
• How Nathan dropped 18 lbs in 4.5 weeks (ab folds 8mm → 3.5mm) without hunger or crashing
• Anthony's calorie-cycling model
• The cell-danger response that explains why a cut paradoxically stalls
• Why cell hydration (not just an electrolyte packet) makes peptides actually signal
• Clenbuterol vs. mirabegron, and keeping receptors sensitive instead of chasing dose
• How to build the ultimate shred stack for you

Chapters (order locked; timestamps TBD — fill from final edit, raw transcript had none)

0:00 The THC Round Table (Cold Open)

: Nathan's THC + Nootropic Protocol for Creativity

: Edibles, Metabolism & Drew’s crazy Weed-Butter Story

: The Real Topic: Getting Shredded to the Bone (Pt 1)

: Are Your Fundamentals Actually Dialed In?

: The Engine-First Idea: Mitochondrial Prep Before You Cut

: The 4-Block Prep Sequence (Cleanup → Biogenesis)

: The Cell Danger Response & M1/M2 Macrophage Shift

: Ketone Monoesters, MCT Transporters & Cell Hydration

: The Fasted-Cardio Stack

: The Pre-Workout Stack

: Nightly Recovery: DSIP, GH, T3, Glutathione

: The Off-Day GLP Stack & Calorie Cycling

: Beta-Agonists, GH vs MK-677 & Choosing Anabolics

: mTOR vs AMPK Is a Pendulum + Cold Plunge Timing

: The Finish: Peaking vs Just Stepping On Stage

: Why Most People Should Run ONE Compound

: Where to Find Nathan & Anthony

Connect with Optimal Nathan

• YouTube: https://www.youtube.com/@OptimalNathan
• Instagram: https://www.instagram.com/optimalnathan
• Bioregulators course: https://whop.com/the-optimization-lab

Connect with Anthony Castore

• Instagram: https://www.instagram.com/anthonycastore/
• Community: https://www.skool.com/castore-built-to-adapt-7414/

For education only — not medical advice. The compounds discussed are advanced and context-dependent; work with a qualified coach and physician.