KBMH

Head First: The Fitness Mindset Series (Chapter 4)

Picture of Vadim Firsov

Vadim Firsov

The Jungle in Your Head

Heads up before we start:

I’m probably saying stuff in this email that I technically shouldn’t say publicly.

So let’s be clear—this is for educational and entertainment purposes only.

I’m not a doctor, a therapist, or your guru.

I’m just a guy who experimented a lot, fucked around, and figured out some things that worked for me.

You’re responsible for your own actions.

Do your own research. 

Don’t blindly trust me—or anyone, for that matter.

Cool? Cool…

 

Ever walked the same route through a forest over and over until it basically becomes a trail?

That’s how your brain works.

It’s called neuroplasticity—the brain’s ability to rewire itself, form new connections, and literally change how you think and who you are.

Not in a spiritual “just believe!” kind of way. 

In a real, scientific, MRI-scanned, neuron-firing kind of way.

The old belief? That your brain stops changing and forming new connections in your early 20s.

That once your “personality” or “traumas” or “bad habits” are baked in—you’re done. That’s just who you are.

Bullshit.

(And now science agrees.)

Your Brain Is Not a Hard Drive

It’s not fixed.

It’s a living, evolving jungle of pathways.

Every thought, every habit, every belief? Just a path through that jungle. Some paths are carved deep—you’ve walked them for years. 

Others are barely visible.

But here’s the kicker:

The more you walk a new path, the easier it gets.

Do it enough times, and your brain says, “Hey, this is the path of least resistance now. Let’s just go here by default.”

Boom. Behavior change.

My Life = Proof

In the last 10 years, I changed everything about myself.

I’ve been a salesman. A marketer. A self-taught mobile developer. 

Now I do kettlebell swings for the internet. 🤷‍♂️

Why am I telling you this?

Because most people say “you can’t change.”

I call bullshit again.

I used to be 110kg and completely controlled by food. Now I’m lean, strong, and calm around snacks.

Not because I was born with monk-level discipline.

Because I slowly carved new mental paths. 

Over and over. 

Until the new me felt easier than the old one.

When Neuroplasticity Hits Hard

Here’s something wild:

Certain things can speed up plasticity—open the brain to rewiring fast.

  • Moving to a new place

  • Breaking up from a long-term relationship

  • Becoming a parent

  • Even a psychedelic trip (don’t ask if I tried it 👀)

Ever notice how someone breaks up from a long relationship and suddenly gets shredded?

Or moves to another country and levels up?

It’s because their brain was shocked out of autopilot.

Their routine got nuked. 

And in that window of “WTF is going on,” the brain became flexible again.

New behaviors feel easier to install during these times—if you’re intentional.

Same goes for tools like:

  • Hypnosis (not the goofy stage kind—real therapy-level hypnosis. My boy Huberman even recommends it)

  • Psychedelics (used clinically now for PTSD, addiction, depression)

  • Therapy (seeing a good psychologist is a life cheat code—not just for fixing shit, but for growing)

But here’s the beautiful part:

You don’t need trauma or drugs or a therapist to rewire your brain.

You just need repetition + awareness.

Imagine This:

You have a thought.

That thought leads to another.

Then another.

And boom—you’re in the pantry. Or on the couch. Or halfway through a tub of ice cream.

Not because you chose to.

Because your brain did it for you.

Most of your daily actions?

They’re not decisions.

They’re reactions.

Autopilot scripts your brain has rehearsed for years.

You don’t “decide” to scroll.

Your thumb just moves.

You don’t “choose” to binge.

Your brain hits play on a familiar track:

Feel stressed → Eat sweets

Feel anxious → Open TikTok

Feel lonely → Text your ex

Feel bored → Snack

Feel rejected → Watch porn

Walk in the door → Open the fridge

Finish dinner → Crave dessert

Get to Friday → Order pizza

These aren’t bad habits.

They’re well-trained habits.

Paths your brain knows by heart. So it runs them with zero resistance.

But here’s the good news:

You can train new paths too.

At first, they’ll feel clunky. Fake. Like dragging your feet through a jungle.

But walk them enough times, and they become easier than the old ones.

Feel stressed → Go for a walk

Feel tired → Stretch for 5 minutes

Feel anxious → Take 10 deep breaths

Feel overwhelmed → Journal for 3 minutes

Feel snacky → Eat protein

Feel lonely → Hit a workout

Feel bored → Call a friend

Feel sad → Step outside and move

Do that enough times and one day…

You won’t have to choose anymore.

Your brain will pick it for you.

That’s neuroplasticity.

That’s your jungle clearing.

And that’s how you shift from running old code…

To writing your own.

2 Big Ideas I Want You to Take from This Chapter:

  1. You are not stuck.

    No matter how long you’ve been “this way,” you can change. You can create new thought chains, new emotional defaults, new identity patterns.

  2. Use change as fuel.

    When life hits you with a breakup, a move, a big transition—don’t fight it. That’s your moment. Use the chaos to carve the person you actually want to become.

Even if you’re not in a big life shift right now—you can still do this.

It just takes more reps, more intention, and more awareness.

Your Task for This Chapter:

  • Think of one habit you want to install.

  • Start carving that path today. Just once.

  • Do it again tomorrow. Then again.

  • After a week or two? Less friction.

  • After a month? It’s starting to feel like autopilot.

That’s when you know: the jungle is starting to clear.

 

P.S.

If you’ve been through a big change recently (or you’re going through one now), this is your window. 

Use it. 

Be intentional.