No1 Fitness is a Fitness Studio located in Kilcullen Co. Kildare.

We run a wide range of classes to suit all fitness levels.

We are not only passionate about fitness, training, nutrition and maintaining a healthy lifestyle. We are also dedicated to motivating and supporting our clients

We aim to help every person that walks through our doors achieve their goals in a warm and friendly atmosphere. We aim to educate every person with training and nutrition advice to help them sustain a healthier lifestyle.


The Air Relax pneumatic compression system is designed to help you with peak performance. Recover faster, increase circulation, reduce muscle soreness, fatigue and inflammation. Become the best athlete you can be with the ultimate recovery tool in sport!

  • Improves your range of motion
  • Reduces recovery time and accelerates warm-up time
  • Clears the muscles of lactic acid and reduces fatigue
  • Increases blood circulation and oxygen distribution
  • Releases muscle stiffness and soreness
  • Increases sporting performance and everyday fitness





post2” 1st met beata last year when I went to her for PT…over the past few months I have had nothing but continuous help and support from her with regards to all aspects of food,exercise and how to adapt a healthier lifestyle that suited my own personal and work routine…after completing my PT I joined no.1 fitness which I thoroughly enjoy! Both beata and Mariusz are excellent trainers and properly teach you how to do exercises properly,with correct form and also provide proper diet plans and measurement checks with continuous help and support…I would recommend no1 fitness to anybody of all fitness levels or new beginners looking to learn and enjoy working out in a comfortable and friendly environment! .”
– Sarah Gleeson

“I joined No1 Fitness in November with a view to getting fitter for the 2019 summer cycling season and also to help with an injury. I had Rotator Cuff injuries to both shoulders with very limited movement and painful when sleeping. Mariusz said that between Beata and the the team they would fix the injury as well as train me to be stronger on the bike! So after six months with the No 1 crew and members I now have pretty much full movement in the shoulders and I just completed the Mount Leinster Challenge at the weekend cycling twice up Mount Leinster with 15 personal bests over last years effort and a much stronger finish. Thanks to everyone at No1 Fitness especially the club members who make you one of the family and encourage you to be your best!”


post2” I joined No1 Fitness back in November on the day it opened. I knew Mariusz in a personal capacity and had trained with him before so I couldn’t wait until himself and Beata opened the doors in No1 Fitness. Since joining I haven’t looked back. Both myself and my Fiancée Sarah are regular attendees to daily classes. Mariusz and Beata offer the perfect combination of classes with something to suit everybody’s level of fitness. Whether you are a beginner or an experienced athlete – these guys have a personalised plan for you. Mariusz and Beata have worked closely with me throughout my time at No1 fitness to improve my strength, flexibility and diet. I couldn’t recommend these guys enough.”
– Tadhg Cowhig

post2“I’ve been competing in triathlons for the last 5 years and met Mariusz through his involvement with Naas triathlon club. I started run coaching 3 years ago with Mariusz on a one to one basis. Mariusz then added strength & conditioning training to my coaching program and gave me advice on sports nutrition. He developed a personalised training plan for me while also helping me to select the most suitable triathlon events to cater to my strengths.
When no 1 fitness opened its doors, it offered a fantastic facility for me to train with both Mariusz and Beata. The classes cater for a mix of all abilities and I enjoy the group effort. No 1 fitness offers a professional and fun environment to reach your fitness goals. I look forward to working with the No 1 fitness team and I would recommend them to both the beginner and the athlete looking to move to the next level. ”
– Paul Doyle 


Beata Zielinska
Beata ZielinskaHead Coach / Personal Trainer
Beata is a dynamic and enthusiastic person who has focused her career on the Health and Fitness Industry since 2008. Her journey with sport started when she was 7 (swimming and general functional movements). Since 14 yrs old she joined her first fitness club where she found her passion for fitness.

She was growing up with professional body builders where she learned and experienced a lot. Her break from weights was very enjoyable fitness classes. Since then Beata knew what is her destiny.

She wants people to fall into fitness as she did!Currently she believes that sport and fitness are way of balanced life and she can not stop to share this with others every day at work!

Beata has open mind personality and she looks at people in holistic way . She can help you to be addicted with fitness and weights, whether you are brand new to the gym or life-long athlete.

She is qualifited in:

Fitness & Gym Instructor, Olympic Weights Lifting Trainer, Pilates & Yoga Instructor , HIIT & Tabata
Circuits Trainer, Body Tone Instructor, Indoor Cycling Instructor, Suspension Training Trainer,
Kangoo Jumps Instructor, Life & Executive Coach ( sport & nutrition coach), REP’s Ireland.

Together with Mariusz she has founded No1Fitness Kilcullen.

Mariusz Olejniczak
Mariusz OlejniczakHead Coach / Personal Trainer
Mariusz has been working in the fitness industry for over 15 years. In that time he has had the pleasure of working with all different types of people from beginners to professional athletes. Mariusz has a deep knowledge of Triathlon, Cycling, Running, Functional movements and Olympic Lifting.

A typical workout of his will include a variety of equipment: the TRX Suspension Trainer, kettle bells, free weights, even body weight exercises. He enjoys seeing people succeed and realize goals that they never thought were achievable through hard work and determination.

Originally from Poland. Living in Co. Kildare for over 10 years where he continue his sport career. He is multiple medalist of Polish and Irish championship in triathlon. Finished 4 Ironman triathlons with PB 8:59:28 and 29 marathons with PB 2:38:15s. The biggest achievement for him was racing with the best athletes in Ironman World Championship in Hawaii.

He is qualifited in: Academy of Physical Education – Master degree – Teacher
NCEF – Fitness instructor / Personal Trainer
Triathlon Couch
Certified Strength & Conditioning
Olympic weight lifting
Spin instructor
Full Swim Instructor

Together with Beata he has founded No1fitness Kilcullen.

A-Jall types of fitness!
A-J loves all types of fitness! Special interests include swimming , sailing , weights training, running, cycling and team workouts! Having being diagnosed with asthma at a young age, A-J took up swimming as a form of general exercise and conditioning.
A-J worked hard and competed at both club and school levels for swimming. This lead to a keen interest in water sports and sailing then became a huge passion. Starting out with junior training and working up to a national level competing all over Ireland and Europe. Sailing required a lot of strength and endurance and this is where a love for weights training and strength and conditioning workouts began. The benefits from this training and hard work paid off and numerous podium wins were achieved, leading to an Irish no 1 ranking position. Next came triathlon -why not when you can already swim, lets add the bike and running to the battle! A-J currently trains and races under the Naas Triathlon Club and has 7 Half Ironman medals under her belt to date. (Lost sheep x2, Barcellona x2, Shadowman x1 ,Galway challenge x1, Dublin ironman x1). A-J qualified in exercise , health studies and personal training and now enjoys training others in all areas of fitness and well being. From all her sporting achievements and qualifications A-J thoroughly enjoys training people from varied sporting backgrounds and for various disciplines, no matter your training goals A-J can get you there
Conor Tiernan
Conor TiernanPersonal Trainer
Conor has been involved in fitness since a very young age having played GAA locally and inter-county before taking up triathlon.

He has a wide range of knowledge including NCEF, S&C, Circuit training, GAA Specific training and triathlon coaching

He loves to see other people succeed and achieve their goals and works with people in groups and individually to help achieve this.
Alicja Olejniczak
Alicja OlejniczakPersonal Trainer
Alicja has been working in the fitness industry for over 15 years. In that time she has had the pleasure of working with all different types of people from beginners to professional athletes. Alicja has a deep knowledge of Flexibility, Mobility, S&C and Functional Movements.
Her passion is Mountain and trail Running. Swimming, Cycling and Triathlon where she is very successful as an Online-Coach
Alicja finished Academy of Physical Education where she got her master’s degree. Full Swim teacher, Personal Trainer, Pilates Instructor, Fitness instructor.
She completed many endurance events including Marathons, Ultra Marathons, Ironmans, and many other events where she got her knowledge of endurance sport.

Through those years Alicja have learned how important for our body and our mind is to keep active. Health and fitness is her passion and she love sharing it with people to help them to live better.



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