Semi-Private Training

Personal coaching in a focused environment. Train with expert guidance, a clear structure and a community of people committed to progress. A small group setting designed around consistency, performance and connection.

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Our mission

Between work, family, and everything else life demands, finding the time and consistency to prioritise yourself can feel impossible.

Real progress begins with understanding what works for you. Through personal coaching, structured training and lifestyle guidance, you build the habits and capabilities required for long-term performance. Every session has a purpose. Every adjustment moves you forward.

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What's included

Everything you need to build consistency.

Semi-Private Training Sessions

Train in a small group with expert coaching, personalised to you.

360° Intake

A complete assessment of your training, nutrition, lifestyle and current situation. Together in one integrated system.

12-Week Plan of Action

A clear roadmap to guide your development. Every step of the way.

Training App Access

Your workouts, progress and guidance in one place. To measure the whole picture.

Progress Tracking

Understand your development and adjust with purpose.

24/7 Support & Accountability

Continuous guidance between sessions to help you stay consistent.

Why ONE semi-private training?

Consistency grows when structure, coaching and community come together. At ONE, Semi-Private Training gives you personal guidance in a safe, focused space, alongside a tribe that shares your ambition.

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500+ members training weekly.

Giulia Battaglia, 33

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

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

Rick Luger, 36

Private Training Basic

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

Franca Cumbo, 54

Semi Private Training Basic

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

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

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

"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

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

Siobhan D'Abreu, 30

Personal Training Basic

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

Mirjam Schuele, 45

Private Training Premium

A smarter way to train

Most fitness offerings focus on one thing. ONE brings everything together.

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Meet the team

At ONE, your progress is a team effort. Every week, the full team reviews which clients are on track and who needs more support. Behind every trainer is a mentor. Behind every mentor is Glenn. You don't just get a coach. You get a team with a proven method, built to get you where you want to go.

Learn more about the team

All in. One. One place. The whole picture.

Book your free consult

Semi Private Training Basic

329,-/ mo
  • 8 SPT sessions
  • 360 degree intake: Training, Nutrition, Lifestyle assessment
  • 12-week plan of action
  • 24/7 Support & accountability
  • Train App Access
Most popular

Semi Private Training Premium

3 extra training sessions for just €70 extra

399,-/ mo
  • 8 + 2 SPT sessions (Worth €80,-)
  • 1 Personal Training session (Worth €95,-)
  • 360 degree intake: Training, Nutrition, Lifestyle assessment
  • 12-week plan of action
  • 24/7 Support & accountability
  • Train App Access
Pricing

Have a question? Let us help

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Get started today

Connect with us and find out how training, lifestyle and context come together in one system, built around you.

Rafael Cabral

Sales Manager

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