Personal Plans
Every plan starts with your 360° intake and is built around your training, nutrition and lifestyle. Adjusted as you progress.
One system. Better results.
A complete approach combining expert coaching, personalised training, nutrition and accountability into one system for lasting performance.
Your health is influenced by more than your workouts. At ONE, we bring training, nutrition, lifestyle and accountability together into one structured approach. Every element works together. Your coach understands your context, tracks your progress and guides you through every phase of development. Because lasting results come from a system that fits your life.
Our approach
This is the ONE Method. Personal, proven, structured, and built around your context.
One on one support
You train with one dedicated coach who knows your history, your goals and your context. Every session, every time.
Nutritional Guidance
Practical nutrition guidance built around your schedule and preferences, so it holds up on your busiest weeks.
Goal Setting
Together we set clear targets and specific timelines, built around your life and what success actually looks like for you.
Regular Progress Assessments
Regular check-ins and measurements keep your progress visible, so your coach can adjust your plan before you fall behind.
24/7 Support
Your coach is one message away between sessions, so momentum doesn't depend on willpower alone.
Clients served1400+
Locations4
Trainers30
Total transformations534+
500+ members training weekly.
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
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
Giulia Battaglia, 33
Barbara Van Erp, 56
Personal Training Basic
- Improve health metrics
- Lose body fat
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
- Lose body weight
- Become more toned
- Feel more energetic
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
Louise Schalkwijk, 49
Semi Private Training Premium
- Lose body weight
- Become more energetic
- Move better
"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
Jurriaan Puijpe, 31
Semi Private Training Premium
- Lose body fat
- Gain body mass
"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
Olga Pakholiuk, 33
Personal Training Basic
- Improve posture
- Build muscle
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
Siobhan D'Abreu, 30
Personal Training Basic
- Improve overall health
- Mental well-being
- Muscle building
Mirjam Schuele, 45
Private Training Premium
Our Locations
Prins Hendrikkade
Prins Hendrikkade 176 1011 TC Amsterdam
Weekdays: 7:00 - 21:00 Weekends: 9:00 - 14:00
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Groenburgwal
Groenburgwal 9G 1011 HR Amsterdam
Weekdays: 7:00 - 21:00 Weekends: 9:00 – 14:00
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Vondelpark
Tesselschadestraat 1D 1054 ET Amsterdam
Weekdays: 7:00 – 21:00 Weekends: 9:00 – 14:00
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One community
At ONE, you train alongside people who are serious about their progress, in a space built for real connection. One tribe, working toward the same standard.
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.
