Take the first step

A free consultation designed to understand your goals, your lifestyle and the best path forward. Together we'll explore how the ONE Method can support your health and performance.

is this you
At work you're your role. At home you're the one who keeps things running. At the doctor's you're ten minutes and a symptom. At the gym you're a card holder. Everyone sees a part. Nobody sees the whole. That's why it keeps falling apart.
You put in the effort. But when work gets hectic or life shifts, consistency breaks and results stay out of reach.
You've followed the plans and read the advice. Most of it contradicts the rest, and none of it is built around you.
You've invested before and it didn't hold. Trying again feels like a risk you're not sure you want to take.

A stress-free introduction

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

Jurriaan Puijpe, 31

Semi Private Training Premium

  • Loose body gat
  • Gain body mass

Giulia Battaglia, 33

Rick Luger, 36

Private Training Basic

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

Barbara van Erp, 56

Barbara Van Erp, 56

Personal Training Basic

  • Improve health metrics
  • Lose body fat

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

Olga Pakholiuk, 33

Personal Training Basic

  • Improve posture
  • Build muscle

Came back to training after a long break (and I’ve been working out for years) and honestly ONE has been the best training I’ve ever had. In just 3 months I’ve had amazing results, proper body recomposition and I feel stronger/leaner already. The sessions really push you, but in a good way and it actually works.

Panos Ellinas

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

Franca Cumbo, 54

Semi Private Training Basic

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

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

Louise Schalkwijk, 49

Semi Private Training Premium

  • Loose body weight
  • Become more energetic
  • Move better

This place is more than just a gym; it’s truly a life-changing space. I’ve been training here for two months now, and I never imagined I would get this committed to my fitness journey.

Erdal Aydin

Siobhan D'Abreu, 30

Personal Training Basic

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

Mirjam Schuele, 45

Private Training Premium

Get started with a free consultation

Book your visit and see how training, lifestyle and context come together in one system, built around you.

  • Completely free
  • No pressure or commitment
  • 30-minute personalized session

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More than an introduction

A free consultation is where your journey begins. We take the time to understand who you are, what you want to achieve and how coaching can fit into your life. It's an opportunity to ask questions, explore our approach and discover whether ONE is the right fit for you.

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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.

Watch real member stories

Hear how real lives have been changed training with us.

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Book your free consult now

A free consultation designed to understand your goals, your lifestyle and the best path forward. Together we'll explore how the ONE Method can support your health and performance.