Core Four REWIRED — 90 days 1-on-1 | OPTT
Core Four REWIRED — 1-on-1 · 90 days

You know there's
more in you.

Dennis knew it too. He wasn't broken — his system was running on the wrong foundation. Once we fixed that, everything else followed.

Dennis Kuipers — Founder AnyLinQ BV From drained and disengaged to performing at his own standard again.
Book your free Core Four Analysis →
400+
Programmes
90
Days
5,000+
As physio
Alex Parengkuan
Sound familiar?

You've already
tried everything.

  • Your energy isn't what it was — and your bloodwork is fine. The doctor sees nothing.
  • You run on adrenaline and call it drive. You know it won't last.
  • Your focus breaks apart. Meetings drain you more than they used to.
  • You've tried better sleep, less drinking, more exercise. It helps for a while. Nothing sticks.
  • You're physically present at home but mentally still at the office. The people close to you feel it.
  • You're functioning. Just not at your own standard.
  • And quietly, you've started to wonder — is this just what getting older looks like?
The real problem

Everyone treats
the symptom.
We go to the root.

Here's why none of it worked. And it's not your fault.

Every solution you've tried has been aimed at the wrong level. The root cause sits in a layer almost no one addresses — your biology. Your cell. And there is a specific order that matters.

01
The Cell — Light, Water & Magnetism
Your body was built to be connected to the earth. Modern life has broken that connection. Office lighting, screens, constant stimulation — they disrupt your biological clock at the cellular level. Grounding, natural light and water quality are not biohacks. They are the baseline your body needs to run as designed.
02
The Stress Response — Regulation & Recovery
A nervous system stuck in overdrive undermines everything else. Stress is not just external — it lives in unresolved tension, in two directions you're pulling at the same time. Until the nervous system learns to regulate, nothing downstream works properly.
03
The Biomechanics — Structure & Movement
Only when the cell and stress response are addressed does biomechanical correction actually stick. This is why physio, supplements and diets give temporary relief — they go after the third layer without ever touching the first two.
"In 2019 I was diagnosed with multiple sclerosis. Within weeks, every symptom was gone. The MRI still shows MS. I take no medication. To this day. What I do for my clients is exactly what I did for myself."
Alex Parengkuan — Founder OPTT

Two decades as a physiotherapist and performance coach. Head therapist at Neptunus Baseball — six national championships, three European Cups. 400+ individual programmes. 5,000+ treatments.

Results

What it looks like
when you feel like
yourself again.

Dennis Kuipers — Founder AnyLinQ BV

"From drained and disengaged to sharp — back to performing at the standard I hold myself to."

Energy restoredMental sharpness back
Piet Hoenderop — Director

"Thirty years of back pain. Tried everything. After 90 days: pain-free. And I no longer need my diabetes medication."

30 years of pain goneOff diabetes medication90 days
Elbert van Dalen — CEO

"Working with Alex was a complete reset. Of myself. Of how I show up."

Full reset
Lisette Spork — Entrepreneur

"Better sleep, noticeably more energy, focus back — and the chronic pain is gone."

Sleep improvedPain-freeFocus restored
Core Four REWIRED

90 days.
Fully 1-on-1.

Most programmes add to your load. This one removes what's draining you. Every week — a live, personal session with me via Zoom. No group. No modules. No catching up.

0
Biological Baseline — 90 minutes
A deep analysis of your environment, nutrition, water, sleep, blood and gut. Not a generic health check — a precise read of your specific situation.
1
Your Personalised Plan
A concrete written plan built from your baseline. What you do when you wake up. How you adjust your environment. What you eat and when. Written for you specifically.
2
12 Weekly 1-on-1 Sessions via Zoom
Every week we meet on Zoom. We go step by step, adjust based on your progress. WhatsApp access throughout.
3
Measurable Outcomes
We track sleep quality, energy, pain, focus and biological markers. So you don't just feel the shift — you can see it.
Time required
45–60 min
per week
The changes you make are not additions to your schedule — they replace how you do things you already do. Most participants report getting more time back than they put in.
Fully remote
Sessions via Zoom
Blood and gut tests are posted to you in week one. Direct WhatsApp access for the full 90 days. No commute. No scheduling gymnastics.
Book your free Core Four Analysis →

30 minutes. No obligations.

Is this for you?

You want results.
Not another
programme.

This is for you if
  • →You're a founder, CEO or entrepreneur (35–60)
  • →You've tried the standard solutions — none of them stuck
  • →You can feel your body is no longer keeping up with what you're building
  • →You're willing to commit fully for 90 days
  • →You're willing to be brutally honest with yourself
This is not for you if
  • →You want a quick fix
  • →You want a self-paced online course
  • →You're not willing to change your environment or habits
  • →You believe the answer is just working harder

"I can't do this for you. I can show you how. If you do what's needed, the question isn't whether we'll get there. It's when."

Alex Parengkuan

Alex Parengkuan
About Alex

Two decades.
One discovery.

Physiotherapist from 2007. Sports physio. Seven years as head therapist at Neptunus Baseball — six national championships, three European Cups. In those years I learned what actually separates functioning from excelling.

In 2016, during a training in Seattle, I had a flashback to 1994. I was 14 and was nearly left for dead. Twenty-two years later I finally understood: the body keeps the score.

In 2019 I was diagnosed with multiple sclerosis. Within weeks, every symptom was gone. No medication. To this day. What I do for my clients is exactly what I did for myself.

400+
Individual programmes since 2017
5,000+
Treatments as physio (from 2007)
6x
National champion Neptunus
3x
European Cup winner
Investment

90 days to feeling
like yourself again.

Founding members — first 5 participants
€5,500
Excluding VAT · One-time payment · Full 90-day programme · After this: €6,600
  • Biological baseline assessment (90 minutes)
  • Personalised plan
  • 12 weekly 1-on-1 sessions via Zoom
  • Blood and gut tests (sent by post)
  • Direct WhatsApp access (90 days)
  • Monthly progress tracking
  • Results guarantee
Book your free Core Four Analysis →

Want to feel like yourself again? Commit fully. Do what we agree. If after 90 days you haven't seen real improvement in energy, sleep or pain — you get an extra month, free. No questions asked.

€61 a day to feel like yourself again.
Questions

What you're
probably wondering.

How do the sessions work?
All remote via Zoom. Blood and gut tests are posted to you in the first week. No commute. No scheduling gymnastics. We'll cover everything in the free Core Four Analysis.
How much time does this actually take?
The weekly session runs 45–60 minutes. The changes you make aren't extra — they replace how you already do things. Most participants report getting more time back through higher energy and sharper thinking.
I'm already working with a doctor or specialist. Can I still do this?
Yes. This works alongside existing treatment. We don't give medical advice and always coordinate with your physician — especially around medication.
How does the guarantee actually work?
Commit fully. Do what we agree. If after 90 days you haven't seen real improvement in energy, sleep or pain — you get an extra month, free. No debate. No fine print. This doesn't work if you go through the motions. But for people who commit — it always works.
Why only 5 spots at a time?
This is fully 1-on-1. I work with every participant personally — no team, no assistants. Five is the maximum I can take on without compromising the quality that gets results.
Start here

You've been running
on empty long enough.
Let's change that.

Book your free Core Four Analysis. 30 minutes. No pitch. We look at what's actually going on — and whether this is the right next step for you.