When you see booster tubs being sold with slogans like “brain function activation” and “extreme focus,” it’s so pathetic it leaves me speechless.
Most of these guys think that if they eat some lump of caffeine and their heart pounds, that’s what focus is.
That’s just a frenzy, forcibly whipping the nervous system to squeeze out performance; it’s not real control.
Real masters don’t abuse their nerves with stimulants like that.
They hack the brain’s fundamental blueprint, the acetylcholine circuit, and redesign the system itself.
It’s not just borrowing the brain for training; it’s taking full ownership of the brain.
But you better know this.
The moment you mess with this circuit incorrectly, you will be castrated of your very desire to lift, and you’ll degenerate into a soulless muscle machine.
Our Brain’s Neurotransmitter, Acetylcholine
This guy isn’t just a messenger.
It’s the commander-in-chief directing the entire central nervous system.
And the field commanders receiving orders from this commander are the cholinergic receptors.
These commanders are largely divided into two types.
The nicotinic ones that react when you smoke, and the muscarinic ones that react to poisonous mushrooms.
The ones we’re going to target are precisely these muscarinic commanders.
Muscarine
It’s a toxic substance found in poisonous mushrooms like the fly agaric.
Germans in the 19th century first isolated this substance, and when they put it in their bodies, they discovered the parasympathetic nervous system went completely haywire.
Thanks to this poison, scientists learned that our bodies have five muscarinic commanders (receptors) in total, from M1 to M5.
These M1 through M5 are each coded by genes named CHRM1 to CHRM5.
Meaning, if you look into the genes, you can roughly get an answer about the temperament of these commanders.
Out of these five commanders, there are exactly two that a bodybuilder should pay attention to.
M1 and M4.
These two are the core brains responsible for cognition and focus.
In fact, when scientists genetically engineered mice to remove the M1 or M4 commander, their cognitive abilities immediately turned to shit.
Especially the mice with M1 removed showed an inability to focus and hyperactive behavior, acting like crazy.
In other words, M1 is the elite special forces officer that turns your brain into a laser pointer attached to the frontal lobe.
There’s a separate reason why this M1 officer is the real deal.
It doesn’t just boost focus.
It also plays a role in protecting nerves.
Beta-amyloid, the protein debris in the brain implicated as a cause of Alzheimer’s.
When M1 is activated, an enzyme called alpha-secretase that cleans up this debris gets to work.
Simply put, it helps keep the brain clean, preventing your mind from going to hell in the long term.
It doesn’t end here.
What’s more astonishing is research showing that M1 even mitigates acute liver injury.
When M1 was activated in mice with liver damage, the extent of the damage significantly decreased.
For those of you worrying about liver values (AST/ALT) while running orals, do you get a sense of how important a signal this is?
If you handle M1 well, you gain not only the mental fortitude to withstand stronger training but also the system to recover from the damage caused by that training and the drugs.
So, you might ask, is it all good if we just activate the hell out of this M1 guy?
This is where the real hell begins.
Nothing in this world is free.
The moment you awaken M1 and M4, these cognition-specialized officers, the dopamine officer responsible for our army’s morale starts to shut up.
In animal experiments, activating M1 and M4 made the mice show less addictive behavior dependent on dopamine.
What does this mean?
The will that drives you crazy for lifting, that motivation, that pleasure, all come from the dopamine system.
But if you activate M1 and gain focus, but lose the very motivation to cross the threshold of the gym, then what’s the point?
This is the biggest trap that amateurs fall into.
What happens if you use something like an acetylcholinesterase inhibitor that mindlessly increases acetylcholine levels in the brain?
That’s not like giving orders to specific commanders; it’s like shouting through a megaphone to all units.
From M1 to M5, even the nicotinic receptors, everything goes into a state of emergency.
The result?
Improved cognition?
Maybe for a moment.
But soon after, you’ll fall into the swamp of depression and lethargy induced by excessive acetylcholine.
This isn’t strategy; it’s suicide.
A real master looks for selective agonists that precisely target only M1.
It’s about catching two rabbits—cognitive ability and liver protection—without breaking the morale of other systems, especially dopamine.
That is the realm of the system designer.
This isn’t just about memorizing a list of drugs; it’s about seeing through the personality of each commander and their interactions on the battlefield of the body.
You want to take control of your body’s command center?
Then start by understanding the temperament of each commander, one by one.
The real war isn’t in the muscles; it happens between neuron and neuron.
Related Papers
1. The Direct Link Between M1 Receptors and Cognitive Ability
A study proving that mice genetically lacking the M1 receptor showed severe impairments in specific cognitive functions, particularly learning and memory.
It’s a paper that nails down with irrefutable data that M1 is the core of brain performance.
(Anagnostaras, S. G., et al. (2003). Selective cognitive dysfunction in acetylcholine M1 muscarinic receptor mutant mice. Nature neuroscience, 6(1), 51-58.)
https://www.nature.com/articles/nn978
2. The Neuroprotective and Alzheimer’s-Inhibiting Function of the M1 Receptor
Showed through experiments that removing the M1 receptor led to more accumulation of the protein debris (beta-amyloid) that causes Alzheimer’s in the brain.
Evidence that M1 activation is more than just focus; it’s a defense system that protects the brain itself.
(Davis, A. A., et al. (2010). M1 muscarinic acetylcholine receptor deletion increases amyloid pathology in vitro and in vivo. Journal of Neuroscience, 30(12), 4190-4196.)
https://www.jneurosci.org/content/30/12/4190
3. The Clash Between M1/M4 Activation and the Dopamine System
Shows that drugs activating M1 and M4 receptors have the effect of suppressing dopamine system hyperactivity (addiction, schizophrenia-like symptoms).
In other words, it’s data proving the mechanism that messing with M1/M4 to grasp cognitive ability inevitably puts a brake on the dopamine system responsible for motivation and pleasure.
(Yohn, S. E., et al. (2019). A novel M1/M4 muscarinic receptor agonist, reduces schizophrenia-like-deficits and cognitive impairment in rodents. Neuropsychopharmacology, 44(9), 1639–1648.)
https://pmc.ncbi.nlm.nih.gov/articles/PMC6708349/
