12-Week Post-Summer Transformation Program

Have you tried to control your body? We teach you to listen to it.

A 12-week depth-coaching program for people ready to understand what hunger, cravings and stubborn weight are actually trying to say — led by a performance expert and a depth psychologist.

Give us a callFind your memberships
1-on-1 intake includedWith Serva - Depth Psychologist
Six Groupcoaching sessionsIn-Person I Max 8 people
24/7 SupportSupport between every session
Is this you?
You've tried every diet on the market: keto, fasting, calorie counting, and the weight never stays off for long.
You've been told you're "an emotional eater" more times than you can count. It never actually changed anything.
You've done everything "right", and still feel disconnected from your own body, like you're managing it instead of living in it.
You've gotten so skilled at controlling your body that you've forgotten what it actually feels like to be hungry, full, or simply at ease in it.
Some part of you stays braced for a fight, even when nothing's wrong — like your body never got the message that it's safe to stop protecting itself.
Book a call

Your body was never asking to be controlled. It was asking to be heard. Here's what years of this work have shown us: none of this is really about food. Food is just where it shows up. You don't need another rule to follow. You need someone to finally ask the right question — and stay with you while you answer it.

500+ members training weekly.

Giulia Battaglia, 33

Rick Luger, 36

Private Training Basic

Love this gym! The vibe, the concept and the energy - all spot on. It is the most inspiring and supportive workout community I have been part of.

Eerika Roos-Kulvik, 35

Siobhan D'Abreu, 30

Personal Training Basic

  • Improve overall health
  • Mental well-being
  • Muscle building

Barbara van Erp, 56

Joined ONE at the end of March and it’s honestly been one of the healthiest changes I’ve made this year. What I appreciate the most is how sustainable the approach feels — not just “go hard at the gym”, but actually building habits that fit my real life structure. A definite additional call out is for ONE environment which is welcoming, motivating and grounded. Very happy I started this journey here.

Gabriel Martins, 41

Louise Schalkwijk, 49

Semi Private Training Premium

  • Lose body weight
  • Become more energetic
  • Move better

Training at One has genuinely changed my life. I don’t just feel physically better than I ever have — I’m emotionally stronger too. The trainers here are incredibly dedicated; they truly understand life’s challenges and know exactly how to adapt your program to get the most out of you, even on days when you’re exhausted or emotionally drained. The environment is wonderful. Everyone is friendly, and you can tell people genuinely want to be there. It’s an incredible place, and I’m so grateful I found it. Highly recommend to anyone looking for more than just a gym.

Natalie Wills, 44

Olga Pakholiuk, 33

Personal Training Basic

  • Improve posture
  • Build muscle

"After years of therapists and psychiatrists, working with Serva was the first thing that actually helped me move forward — by finally feeling safe enough to be vulnerable."

Private client

Franca Cumbo, 54

Semi Private Training Basic

  • Lose body weight
  • Become more toned
  • Feel more energetic

I’ve been blown away by my experience at One. It’s a gym that feels personal, like an actual community. When I started doing private sessions with my trainer, I immediately felt how closely my progress was being monitored to make sure I had the tools to succeed. You’re not just clocking into a class and clocking out. There are real people here who genuinely CARE about your success.

Melyssa Griffin, 37

Jonathan Butler, 31

Personal Training Premium

  • Improve overall health
  • Muscle building
  • Weight loss

In just six months, I’ve lost weight, built strength, and achieved more than I thought possible. This gym’s professional approach, personalized programs, and supportive environment make it a great choice for anyone serious about their fitness goals.

Giulia Battaglia, 33

12 week results

Jurriaan Puijpe, 31

Semi Private Training Premium

  • Lose body fat
  • Gain body mass

"After my stage 3 cancer diagnosis, four months of coaching with Serva helped me make peace with my body, reconcile with a sister I hadn't spoken to in ten years, and face treatment as an adventure instead of something happening to me."

Beverly

Barbara Van Erp, 56

Personal Training

  • Improve health metrics
  • Lose body fat

Mirjam Schuele, 45

Private Training Premium

The Program

Serva

Depth psychologist, Jungian life coach and PhD candidate, with a Master's in Jungian and Archetypal Studies from Pacifica Graduate Institute. Her research and practice focus on the conditioning that shapes how people relate to their own bodies. She's worked with enough high-achieving clients to notice the same thing repeatedly: chasing the "ideal body" rarely closes the gap underneath it. What does is a more honest relationship with the body itself — which is the work she brings into this program.

Glenn

Founder of ONE Human Performance Institute and a long-standing expert on long-term weight-loss strategy. Glenn has spent years watching where discipline-only approaches break down.

Choose your program

The group container

€1.799,–

12 weeks · full program

  • Individual intake with Serva Moradi
  • 6 × 3-hour in-person group sessions
  • 6 × 1-hour group check-ins
  • Full 12-week structure and materials

Group + Individual

€2.499,–

12 weeks · full program

  • Everything in Premium
  • 6 individual coaching calls with Serva
  • Continuity between group sessions
  • Deeper, more personal pacing of the work

Founded with a purpose

After losing a family member, I understood that health cannot wait. I built ONE to be more than a gym. A place where real support meets real people. So you progress in real life.

More about us