kalkmancoaching.com

5
5 Based on 8 reviews

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Rafael De Faveri
Started the coaching in october, 1 week after my weeding with one thing in mind: I wanted to be in t

Started the coaching in october, 1 week after my weeding with one thing in mind: I wanted to be in the best shape of my life in a sustainable way to “reward” my wife after 7 years of dating.

And of course, Ruben delivered it! In the beginning I wasn’t very active and he had a lot of work to do, I had very profound misunderstanding about how fitness works and he taught me a lot of things, and the most important is that this journey could be enjoyable.

It took me 3 months to really understand how to rearrange my routine and my beliefs into being healthier and Ruben helped me A LOT with it, having weekly check ins, lots of chats on whatsapp and a video call every month.

After getting it all figured out, the last 3 months of coaching were where the biggest and most quickly changes happened, and at the end of it everybody can attest that I’m indeed in the best shape of my life.

And not only that, I’m in a sustainable shape and lifestyle that doesn’t require me to give up on anything I enjoy. I can still go to social gatherings, travel with my wife, eat pretty much everything and really enjoy all my weeks, all my meals and everything without guilt because now I have a system that works and put me where I want to be.

For the first time in my life I’m enjoying the process of being healthy, so it’s obvious that I recommend Ruben’s Coaching for everyone that wants to live a healthy, sustainable life.

5
Date of experience: Apr 14, 2026
Rafael De Faveri
Recommend 100%

Started the coaching in october, 1 week after my weeding with one thing in mind: I wanted to be in the best shape of my life in a sustainable way to “reward” my wife after 7 years of dating.And of course, Ruben delivered it! In the beginning I wasn’t very active and he had a lot of work to do, I had very profound misunderstanding about how fitness works and he taught me a lot of things, and the most important is that this journey could be enjoyable.It took me 3 months to really understand how to rearrange my routine and my beliefs into being healthier and Ruben helped me A LOT with it, having weekly check ins, lots of chats on whatsapp and a video call every month.After getting it all figured out, the last 3 months of coaching were where the biggest and most quickly changes happened, and at the end of it everybody can attest that I’m indeed in the best shape of my life.And not only that, I’m in a sustainable shape and lifestyle that doesn’t require me to give up on anything I enjoy. I can still go to social gatherings, travel with my wife, eat pretty much everything and really enjoy all my weeks, all my meals and everything without guilt because now I have a system that works and put me where I want to be.For the first time in my life I’m enjoying the process of being healthy, so it’s obvious that I recommend Ruben’s Coaching for everyone that wants to live a healthy, sustainable life.

5
Date of experience: Apr 14, 2026
Kenneth
My growth with Ruben

I come from being always a healthy and sporty young kid, but was always skinny.The last few years I did some at home bodyweight trainings but nothing really stuck for a long period (mostly a couple of months), and besides that, I hated the gym (but mostly because I didn't know how the machines worked and I had a big ego).After starting with Ruben, the same continued for the first months as I was always too busy to go to the gym and always found excuses.Nonetheless, Ruben kept messaging me, motivating me, and believing in me, and after some months I started to go more the gym more, understand more about the machines, build muscle, and become more confident overall. I also came to the understanding that trying different gyms is key to finding the one that works for you (something I would have never found out on my own).Besides that, I started to gain some weight (which was kind of a miracle for me) as I began to understand more about the food I was eating, what worked for me, and so on.After 6 months, I gained almost 5kg and go now at least 2 times and most of the time 3 times a week to the gym and recently started running too.Most of the people measure growth with pushing more weights, gaining or losing weight, but sometimes (as the case with me) it was about breaking a longtime barrier of fear and procrastination.So I am very happy with my results and the coaching of Ruben, as I would have never done it myself and that's okay. We need guidance and a mentor to go to the next level.

5
Date of experience: Jan 10, 2026
Giorgos Kalpakis Maziotis
Healthy lifestyle

Before consider starting the online coaching experience I was a little bit sceptical about the whole process.After I met Ruben and learnt the step by step actions I decided to follow this 4 month journey. I highly appreciated the well organized work out program and meal/nutrition plans adobted to my needs. Ruben was supportive and easily accessible during this period with check ins and video calls. I managed to loose weight and at the same time started to see difference in my body with the weight training.He is an excellent guy that you can trust to help you change not only your body but also your mindset around exercise and health approach of life.

5
Date of experience: Nov 06, 2025
Leon Uittenbogert
It was a great progress

It was a great progress, Ruben was very good with the guidance and all the questions i had were answerd. I would recommend Ruben to everyone

5
Date of experience: Nov 01, 2025
Daniel
Great online coaching!

Before the coaching I already had some experience with working out, but always reached a plateau where I couldn't further improve. With the custom workout and nutrition plans and Rubens support I managed to gain 9kg in 6 months. I now feel way fitter and also established a gym routine that fit into my life. I would highly recommend this coaching to anyone who wants to get fitter and establish healthy habits but might not yet have all the knowledge on how to do this most effectively.

5
Date of experience: Nov 01, 2025
Rovan Palo Darbandi
A coaching program that makes you feel that you are being coached in person

I had great experience with the coaching, and not only that. It feels like you are being coached 1 on 1. Ruben is good with giving you feedback on you and reminding you on doing check ins. This really helpful especially for giving motivation to perform well. Recommend it 10/10.

5
Date of experience: Oct 16, 2025
Henrique
Good coaching

Really good coaching. Ruben creates a personal coaching from your life situation, your goals and needs. You get a meal plan and a workout plan both adjustable. And if you have any question, concern or you need some advice, motivation, Ruben will answer you and help you. I advise you to give it a try.

5
Date of experience: Aug 16, 2025
Will W.
Great workout great experience

I had been down on myself for about 2 years when I started training and getting coached I swear I felt like my old self I was working out every other day and I felt strong and confident he really understood what I was going through and pushed me to better myself

5
Date of experience: Apr 07, 2025

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