Individual approach
The guarantee of an individual diet, comprehensive diagnosis of the cause of your problem, change of eating habits, motivation and support in pursuit of the intended goal!
Permanent cooperation
Every sportsman and every sport requires an individual approach. Do you want your diet to be tailored to your needs and help you achieve the best results? I invite you to permanent cooperation!
Consultation is the first step
Dietary consultation is the first step to improving your well-being. At the consultation you will learn basic information about good nutrition, supplementation and eating habits.
Recommendations of athletes
I work with leading Polish professional athletes like Marcin Prachnio, Bartosz Fabiński, Maciej Sulęcki, Marcin Łepkowski, Jan Błachowicz and Patryk Lipski. I work every day with representatives of many sports disciplines: fighterami, runners, triathletes, crossfiters, footballers.

Why is it worth to work with me?

Individual nutrition programs

Each person is different from the other, that’s why all the created nutrition programs are always well-thought out and well-adjusted to your needs.

Effective methods

Depending on the case (underweight, obesity, professional sport) I develop an appropriate diet in order to improve the quality of your life and health.

Professional activity

Regular trainings, conferences, daily practice, the latest trends in dietetics give me the opportunity to develop, acquire and expand my knowledge.

Reliability and responsibility

I always try to fulfill my duties thoroughly, I advise and help to understand the essence of rational nutrition.

My services


Dietary consultation

Analysis of blood tests and nutritional questionnaire, analysis of the metabolic state of the body, determining nutritional recommendations and supplementation.

Dieta 7 dni

7-Day Diet plan

7-Day Diet meal plan including the supplementation, nutritional recommendations and meal replacements.

Dieta 14 dni

14-Day Diet plan

14-Day Diet meal plan including the supplementation, nutritional recommendations and meal replacements.

Stała współpraca

Permanent cooperation

28-Day Diet meal plan including supplementation, nutritional recommendations, meal replacements, weekly consultation and the possibility of changes in the menu.


  • It is my pleasure to recommend Jacek Feldman. The effects of our cooperation brought me to my knees. Thanks to Jacek I am rediscovering my body, he helps me break down the barriers. A well-balanced individual diet, adequate supplementation and commitment have surprised me very positively. Thanks to our cooperation, my results have significantly increased: strength, speed, regeneration, sleep are much more effective, cutting the weight (about 10 kg) for each fight is not a problem for me, which has always been a problem, despite cooperation with many nutrition specialists. I would recommend Jacek to everyone whose goal is, in particular increasing the sports results.

    Maciej 'Striczu' Sulęcki
    Maciej 'Striczu' Sulęcki MIDDLEWEIGHT BOXER
  • You can see the results and results of fights yourself. I started working with Jacek just before my third professional fight in MMA for the Polish KSW Federation. A piece of good work. I think that this cooperation is just developing and there will always be juicy fruit in the form of won fights. Good diet, weight loss and the whole procedure preparing me for fights is the best so far in my sporting career. I can easily recommend Jacek Feldman as a specialist and a man appropriate in his profession. Regards, thank you Damiano.

    Damian Janikowski
    Damian Janikowski KSW player / Olympic medalist in wrestling
  • I would like to recommend Mr. Jacek Feldman. From the moment we started collaborating, my achievements have grown significantly. The proper diet and supplementation that Mr. Jacek applied to me is really great and effective. My physical condition increased remarkably, the body began to regenerate faster so I can now train with increased workload and higher intensity which translates into a better condition and my sports results. I fully recommend this diet and supplementation specialist.

    Marcin Prachnio
    Marcin Prachnio UFC FIGHTER
  • I have been working with Jacek Feldman since the beginning of 2016. Ever since I met Jacek, he infected me with his passion for dietetics and a healthy nutrition system. During our cooperation, we have already achieved our desired objective five times, Jacek was helping me with full commitment and his knowledge was a key element on the road to success. With a clear conscience and great respect I recommend Jacek as a dietitian to my friends, especially that in my life I have met many specialists who had a very schematic working style. Jacek is a exception to the rule, as a dietitian he approaches each case individually and puts his whole heart to help his clients. Marcin Łepkowski – European Muay Thai vice-champion 2014 and multiple medalist of various prestigious MT events.

    Marcin Łepkowski
  • I started working with Jacek Feldman in mid-2015. Thanks to his knowledge about nutrition, supplementation and also the functioning of the whole organism, my sports results, as well as the results of blood tests have improved significantly. Previous collaborations with other dieticians was based on poor observations of my body, only Jacek helped me to adjust nutrition and supplementation accordingly. His knowledge in the field of nutrition in martial arts is enormous, which has been proved by my well-being in recent months. I would recommend this dietitian to anyone who needs good preparation for the fight as well as anyone who cares about their health.

    Bartosz Fabiński
    Bartosz Fabiński UFC FIGHTER
  • I have been cooperating with Jacek Feldman for over a year. During this time, thanks to his diet plans, my sporting results have improved considerably. I worked with many other dietitians but only Jacek Feldman fulfilled my expectations. He specializes in planning diets for combat sports athletes and thanks to that he perfectly adapted the diet to my physical conditions. I highly recommend to everyone!

    Krzysztof Gutowski
    Krzysztof Gutowski MMA FIGHTER
  • I have been working with Jacek Feldman for a year. During the cooperation I have experienced a multiple improvement of my sports results, thanks to the nutrition plans created by Jacek. Before our collaboration I was working with many other dieticians. Only he met my expectations, because he specializes in composing the diets for martial arts athletes. The diet program has been successfully prepared and adjusted to my physical condition.

    Jan Błachowicz
  • Despite the fact that I started working with Jacek Feldman quite recently, I can recommend him with full responsibility. After a few months of collaboration with Jacek, thanks to his advice, carefully selected diet plan and supplementation, my weight have dropped, and my well-being have definitely increased. As a result, my condition and intensity during trainings have also increased, and due to the appropriate regeneration, my workouts are definitely more efficient, which translates into a better form. Thanks to cooperation with Jacek, I’ve moved to the next level. I definitely recommend Jacek Feldman, who is an awesome specialist in sports nutrition.

    Salim Touahri
    Salim Touahri UFC FIGHTER
  • I have been practicing martial arts for 10 years. Preparations for each fight were always associated with sacrifices and tasteless starvation rations. Ever since I met Jack Feldman, cutting weight for the fights has become a pleasure. His diet is varied and meals are tasty. Everything is adapted to the lifestyle and to the intensity of training. Thanks to his advice I feel very good during the fight, which caused the improvement of my sports achievements.

    Grzegorz Steć
    Grzegorz Steć MUAY THAI FIGHTER
  • I have already worked with many dietitians from Poland or the USA, but I have not seen such a specialist in this profession yet. Collaboration has been very good since the first days. He is a real pro. I recommend Jacek to every athlete who wants to move to the next level and to all physically active people who want to see how the professional athlete’s diet looks like.

    Patryk Szymański
  • I have been cooperating with Jacek Feldman for half a year. Thanks to his nutritional and supplementation plans not only my performance parameters have improved significantly but my health as well. I’ve never felt so good during the weight-cutting process and later during the fight itself, and it have always been a major problem for me during my previous matches. I definitely recommend Jacek Feldman as a specialist in dietetics and supplementation for both people training martial arts and those who want to enjoy good health and well-being.

    Rafał Sępkowski
    Rafał Sępkowski MMA FIGHTER
  • I have been cooperating with Jacek Feldman for over 10 months. Thanks to following the nutrition plans and advice of Jacek, my sport results as well as the condition of my body have improved remarkably. Earlier, during the cooperation with other dieticians, I did not feel such a significant improvement in my mood and training quality as I feel now. I do recommend Jacek.

    Albert Odzimkowski
    Albert Odzimkowski MMA FIGHTER
  • I have been cooperating with Jacek Feldman for half a year. Thanks to the diet and supplementation prepared by Jacek, I could work even harder during the time of preparation, which results in a good form during the season. Better regeneration after training and lack of energy drops during the day are just some of the advantages of cooperation with a real specialist. Previously, I worked with several dieticians, but the diet plan prepared by Jacek was carefully refined and based on previous research. I would really recommend him!

    Patryk Lipski
  • Jacek Feldman is a dietician with whom I have been working for several months. He is a real specialist in composing diets for martial arts athletes. Thanks to his help, I feel more confident, stronger and above all healthier – not only in the ring but also in private life. Although he is many kilometers away, he is always able to help me and to advise. His menu is delicious and easy to prepare. I would really recommend him!

    Pawel Zawistowski
    Pawel Zawistowski MUAY THAI FIGHTER
  • I would like to thank Jacek Feldman because from the moment he took me under his wing I understood that what I do is finally professional. My efficiency, strength and regeneration have changed a lot, and this is all due to carefully planned supplementation, perfectly balanced diet and most importantly very good and frequent contact with the contestant. I know that we will come a long way together! I would recommend you to all professionals!

    Emil Różewski
    Emil Różewski MMA CONTENDER
  • I started working with Jacek Feldman less than a month before my fight at FEN 16 and I have to admit that if it wasn’t for his help and the great knowledge about proper nutrition, it would be hard for me to cut the weight, especially which it was the first time I fought in weight of 61 kg. Previously I had all my fights in 66 kg category. It was quite a challenge for me and for Jacek, but we did it. Jacek was very supportive and very involved. It is certainly a professional that I can recommend with a clear conscience!

    Arbi Shamaev
    Arbi Shamaev MMA FIGHTER
  • I recommend Mr. Jacek Feldman as a diet therapist and sports nutritionist. I have been working with Mr. Jacek for several months and in this short time he helped me to improve my metabolic health, which due to bad functioning excluded me completely from a sports career for more than a year. From the moment I started to follow Mr. Jacek’s recommendations, my blood test results, and most of all my well-being, improved significantly and I returned to a full-size training cycle. By the way, my body composition has also improved significantly. As a personal trainer and a steeplechase runner, I really appreciate the professional and individual approach that characterizes Mr. Jacek Feldman.

    Robert Bandosz
    Robert Bandosz OCR ELITE RUNNER
  • I would like to recommend Mr. Jacek Feldman. Since the beginning of our cooperation, the quality of my workouts has moved to a whole new level. Regeneration is much faster, the strength is growing. CrossFit is a very demanding discipline for both the body and the mind. Thanks to the proper diet and supplements composed by Mr. Jacek, I am able to do every workout according to the plan. In addition to training myself and others, I am also the mother of a two-year-old girl, and thanks to the appropriate diet I am able to succeed in all of these roles.

    Natalia Kaczmarska
  • I would like to recommend Mr. Jacek Feldman. My ability to practice sports was limited by the disease but with the help of this dietitian I can participate in the competition again. We achieved the goal without using medication. The conditioning problems disappeared and I noted a rapid increase in physical fitness. Thanks to his individually selected diet and supplementation, my sports performance moved forward, I restore my strength faster, which means that I can focus only on training. A very professional approach. I recommend everybody to work with this specialist in the field of nutrition.

    Jan Żelazek
    Jan Żelazek MMA CONTENDER
  • We have been cooperating with Jacek for a long time, from the very beginning of our cooperation. Jacek is strongly involved in working with me and applying all necessary changes caused by competition and preparations. Since we have been cooperating, my medical examinations results have improved and I am able to stay fit all year long. Learning nutritional habits and supplementation has helped me to reach a higher level, regeneration after workout and concentration level is the best I have ever had. I can train more and even harder so I make much faster progress. I definitely recommend Jacek Feldman as a sports nutritionist, whoever will go to ask him for advice will benefit from this improving their health and form. I highly recommend him!

    Paweł Żochowski
  • It’s a pure pleasure to work with Jacek. I am an experienced athlete and it was not a first time for me to cut weight, but only in cooperation with Feldman Nutrition I’ve experienced how it is to lose weight and feel good at the same time, and above all, to not be stressed out during the whole process. Everything is totally professional with an individual approach to me as a competitor, starting with a diet and supplementation through advice how to quickly regenerate the body between heavy training sessions till how to regain strength immediately after weigh-in. I would highly recommend!

    Kamil Łebkowski
    Kamil Łebkowski MMA Contender
  • I would like to recommend Jacek Feldman to all people who are focused on a specific goal in martial arts. Jacek is a professional with an individual approach, and consultation with him is a source of knowledge that allows you to enter a higher and higher level. He helped me to go straight with health and enabled me to build a specific form. Without his support, it would be Sisyphean for me, and the research results speak for themselves. I can train more intensively and more effectively, and sticking to recommendations and good eating habits has simply become nice for me. I heartily recommend using Jacek's knowledge, it is an effective base for building sports achievements.

    Mariusz Przewłocki
    Mariusz Przewłocki Fighter K1
  • With great pleasure I would like to recommend cooperation with dietitian Jacek Feldman. Thanks to the diet, appropriate supplementation and nutrition plan, I was able to lose about 10 kg. I feel better and still want to achieve more. Jacek is a real professional and expert in his field. We have been working together for three fights and I hope to continue for the next years.

    Fiodor Czerkaszyn
    Fiodor Czerkaszyn Professional boxer
  • I started working with Jacek with the transition to profession. We base our work on measurable parameters of the respondents before the start of preparations for the fight and regularly in the preparations themselves. I was able to go through the preparations without any problems and obtain the weight limit (I managed without saunas or bathtubs). It also draws attention to the neurological aspects in athletes, i.e. prevention of brain damage and well-being throughout the training process. It is a pity that I did not cooperate with Jack years ago while fighting in kickboxing - I would save a lot of health and nerves in preparations for the fight and reaching the weight limit. I would highly recommend.

    Adrian Ali Ahmad
    Adrian Ali Ahmad Professional boxer



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