💪 Build muscle & strength
6 mechanistic pathways · 71 options
Muscle grows when protein synthesis outruns breakdown for long enough. Every pathway below is a different way to move that balance — more anabolic signal, less catabolic brake, better local repair, or more substrate. They stack, because they are genuinely different mechanisms rather than the same one wearing different names.
The pathways
GH / IGF-1 axis
Growth hormone drives IGF-1, and IGF-1 activates PI3K/Akt/mTOR — the central hypertrophy signal. The honest read: GH is excellent for connective tissue, recovery and body composition, and a weaker direct hypertrophic agent than its reputation. Most of what people attribute to it is fluid and glycogen.
Myostatin & activin inhibition
Myostatin is the brake. Animals and the handful of humans with loss-of-function mutations are extraordinarily muscular, which makes this the most mechanistically compelling target in the whole field — and the one where delivery has repeatedly defeated good biology.
Androgen & anabolic-receptor signalling
The androgen receptor is the most powerful hypertrophic switch the body has. Restoring or supporting it changes the ceiling on everything else in this list. Note what is deliberately absent: SARMs are not stocked, on Cam's flat rule.
Satellite cells & local repair
Hypertrophy needs new myonuclei, and satellite cells supply them. Training damage is the normal trigger; these compounds argue they can amplify or accelerate that response locally, which is a different claim to raising systemic anabolic tone.
Substrate, cell volume & training capacity
The unglamorous pathway, and the one with the strongest evidence base by an enormous margin. You cannot signal your way past insufficient protein, depleted phosphocreatine or a workout you couldn't finish.
Recovery, sleep & the anabolic window between sessions
You do not grow in the gym. Slow-wave sleep is when the largest GH pulse of the day happens, and a training programme that outruns recovery capacity is a catabolic programme wearing a hypertrophy label.
Test before you choose a pathway
Every route below can be argued for on mechanism. Only bloodwork tells you which one is actually your problem — and picking the wrong pathway is the most common reason someone concludes "none of this works". Across all 6 pathways, these are the 17 markers worth having in front of you first.
Ordered together:
🌙 Running GH Peptides or MK-677⚗️ Enhanced Athlete — On-Cycle Monitoring📋 Pre-TRT Baseline🏋️ Athletic Performance & Recovery😴 Sleep Quality & RecoveryYou have the pathways. Here is the stack.
The Muscle & Strength Blueprint names the one compound I would start with in each of these 6 pathways, what it was chosen over, and why — plus 21 options to swap in or stack on top, every one of them priced and linked.
Open The Muscle & Strength Blueprint →The protocols behind these
Dosing, stacking and cycle timing live inside the Academy, alongside the full interactive Vault and the Bloodwork Protocols.
Join the Academy — $10/mo →← Open Build muscle & strength in the interactive Vault · All 21 goals
Frequently asked questions
This goal is broken into 6 distinct mechanistic pathways — GH / IGF-1 axis; Myostatin & activin inhibition; Androgen & anabolic-receptor signalling; Satellite cells & local repair and others — across 71 compounds and supplements. Each pathway is a different argument about how the body gets there, so the useful question is which one matches where you are actually stuck.
The one that matches your actual limitation, which bloodwork usually settles faster than guessing. An appetite drug does nothing for someone who already undereats, and a thyroid intervention does nothing if your thyroid is fine. Each pathway page lists the markers that tell you whether it is your problem.
No. The 6 pathways are listed in mechanistic order, not by strength of evidence, and neither are the 71 options inside them. A lot of what works in this space has never had the trial run, and sorting by trial count would bury exactly the compounds you came looking for.