Stabiler Kern

Nervous System Load Training 4 weeks 1:1.

Head full? Hard to switch off?

Live with me, online or in person.

Sergius Geier in a session
Apply now → Free intro call.

“If I hadn’t had that breathing session with him, I probably wouldn’t have coped at all mentally.”

See for yourself and watch the video.

Andreas

Andreas, department head at a large company, father of two, building his own business. · Translated from German · video in German

Exhaustion rarely comes from too much work. It comes from missing boundaries.

The training

What awaits you in 4 weeks.

  • 01
    Breathing System Reset

    60 minutes, live with me.

  • 02
    Nervous System Reset

    60 minutes, live with me.

  • 03
    Nervous System Load Training

    60 minutes, live with me.

  • 04
    3 private consultations of 60 minutes each

    In these, you learn the matching tools.

  • 05
    4 weeks of support

    Online or in person.

The direct result of your tools isn’t coming down. It’s that this much load doesn’t build up in the first place.

Sergius Geier teaching
Sergius Geier · Master of Korean martial arts

3 × 60 min

Training

Breathing System Reset, Nervous System Reset, Nervous System Load Training.

3 × 60 min

Private consultation

In these, you learn the matching tools.

4 weeks

Support

Live and 1:1, online or in person.

Sergius Geier
Sergius Geier · Stabiler Kern

About me

About Sergius Geier.

Sergius Geier is the founder of Stabiler Kern. He works with men who function on the outside but whose heads won’t switch off anymore. He is a master of Korean martial arts and works with breath, movement and bodywork.

In 2020 he hits his own limit, exactly the man he warns about today. Instead of giving up, he fights his way back. Step by step he rebuilds himself, physically, mentally, emotionally, and returns to martial arts, all the way to master rank.

“I did have tools and options, but I was missing the framework and the basic structure.”

How solid this work is becomes clear between 2023 and 2025, when everything comes at once: his company is on the verge of closing, and at the same time he is hit by severe strain in the family. More pressure than ever before. But this time, what he has built up over decades holds.

17years as an
entrepreneur
16years of marriage
4children
Masterof Korean
martial arts

Client voices

Real voices. Uncut.

Video: Andreas
Client’s story
BeforeI was really at the end of my rope physically, mentally, psychologically, quick to get aggressive.
AfterWith every session I noticed that I’m mentally fitter, my head is clearer, I can make decisions faster.
Andreas, department head at a large company, father of two, building his own business. · Translated from German · video in German
Video: Carlo
Client’s story
BeforeAll that stress got me to the point where at every little thing […] I’d go off like a rocket straight away.
AfterAfter the first session, I’d say I’m a completely different person.
Carlo, 39, after his first session · Translated from German · video in German
Video: Marius
Client’s story
BeforeSomething in my body told me, okay, now it’s too much.
AfterI’ve got better energy. Like, for example, today was the first time I actually slept well.
Marius, self-employed since 2017: presenter, commentator, content creator, broker and consultant, volunteer CrossFit coach · Translated from German · video in German
Video: Svetlana
Client’s story
BeforeEverything just came at once. One piece of bad news after another.
AfterBut at the end of the session I immediately felt how relieved I was.
Svetlana, wife and mother of two · Translated from German · video in German

In their own words.

Portrait of Svetlana

“[…] I also couldn’t find any time for myself to come down and switch off. […] at the end of the session I immediately felt how relieved I was.”

SvetlanaWife and mother of twoTranslated from German
Portrait of Michael

“[…] I don’t know when I last felt this light. Feels like a whole lot of weight has come off my body.”

MichaelHead of office with staff responsibilityBranch manager, development and sales · Client advisor · Certified Risk Manager · Certified business specialist (Fachwirt)Translated from German
Portrait of Andreas

“[…] my head is clearer, I can make decisions faster. I don’t let negative stuff drag me down so badly anymore.”

AndreasDepartment head at a large companyfather of two · building his own businessTranslated from German
Portrait of Altug

“My personal goal was to come down from everyday stress […]. On the drive back I was already solving problem cases with new energy.”

AltugAgency Owner · Top Sales Leader Financial ServicesResponsible for client assets under management in the 7-figure rangeTranslated from German
Portrait of Marius

“Something in my body told me, okay, now it’s too much. […] I’ve got better energy. Like, for example, today was the first time I actually slept well.”

MariusPresenter, commentator, content creator, broker and consultantself-employed since 2017 · volunteer CrossFit coachTranslated from German
Portrait of Carlo

“[…] it’s like a huge weight fell off me. […] the next day I somehow felt a lot lighter.”

Carlo39, after his first sessionTranslated from German
Portrait of Julia

“The next day I had a situation where I normally would have hit the roof straight away. But I was calmer and more relaxed in that situation […]”

JuliaStore manager with executive responsibility and staff leadershipTranslated from German
Portrait of Natalja

“With every session I notice how I can let go more and more. […] I wasn’t aware before how many old tensions, fears and emotions I’m still carrying inside me […]”

NataljaBrand DirectorTranslated from German
Portrait of Eddy

“Thoughts, feelings, memories – things that usually stay in the background became visible.”

EddyTop Sales PerformerResponsible for client assets under management in the 6–7-figure rangeTranslated from German
Portrait of Alex

“Before, I had a stress-related tic that had been with me for quite a long time. Without any conscious work on it, it was simply gone after the session.”

AlexMilitary leader responsible for 20 soldiersTranslated from German

Do you recognise yourself?

Which of these situations do you know from your own life?

01

At the end of your rope

Are you at the end of your rope physically, mentally and psychologically, and quick to get aggressive?

02

Too much on your shoulders

Have you taken a lot onto your shoulders and don’t really know what to tackle next?

03

Bottling everything up

Do you bottle everything up, your fears and your worries?

04

Going off like a rocket

Does all the stress make you grumble at every little thing or go off like a rocket straight away?

05

Everything at once

Is everything coming at once? One piece of bad news after another?

06

Fed up first thing in the morning

Do you wake up already irritated because you still have so much to get done, plus tasks left over from the day before?

07

Nothing but problems on your mind

Do you not know whether you can switch off, because you’ve got nothing but problems on your mind and still plenty to get done, for work, in your private life and so on?

08

Now it’s too much

Is something in your body telling you: okay, now it’s too much?

At a glance

The training at a glance.

  • 3 training sessions of 60 minutes eachBreathing System Reset, Nervous System Reset, Nervous System Load Training
  • 3 private consultations of 60 minutes eachIn these, you learn the matching tools.
  • 4 weeks of support
  • Live and 1:1, online or in personNo video recordings.
  • Free intro call beforehand

Price

On request
Sergius Geier in a session

Common questions

Frequently asked questions.

How much does the training cost?
The price is on request, due to my workload. We’ll discuss price and start date in the free intro call.
How long does the training last?
4 weeks. During that time you have 3 training sessions and 3 private consultations, 60 minutes each.
Does the training take place online or in person?
Both are possible. All appointments are live and 1:1 with me.
Are there video recordings?
No. All appointments take place live.
What happens after I apply?
I’ll get back to you personally, and we’ll arrange your free intro call.
Is this therapy?
No. It’s training and is no substitute for medical or therapeutic treatment.

Intro call

The choice is yours.

I only work with a few people at a time. Apply now for your free intro call.