GNS Fitness

Fantastic experience: I’ve been a member of GNS for three years, and it has been an excellent experience from the start. The variety of classes/PT ensures there’s always something to suit different schedules and fitness levels, and the standard of coaching is outstanding. Aisling, Eoin, Patrick and Shane are attentive, knowledgeable, and genuinely invested in helping members improve. With their guidance, I’ve seen significant gains in strength and, just as importantly, I’ve built a consistent training habit that I really enjoy. Whether you’re new to the gym or more experienced, GNS provides the right environment to progress. For anyone considering joining, I’d highly recommend giving it a try.

Fantastic experience: I have been a member of GNS Fitness for 2 years now and I definitely recommend them! There are a range of excellent classes and group PT sessions available, all taking only 35/40 mins so I can fit them in around work and family commitments. It's a friendly environment and the coaches are very well informed, always encouraging and really focus on correct technique so you get the best out of your training. I really notice my strength and confidence has improved, and going to the gym has just become part of my week! Highly recommend GNS Fitness!

Fantastic experience: Happy to recommend GNS Castleknock. I’ve been going for 1.5 yrs and it’s been my most consistent gym ever. Started out doing PT which was great to learn technique and how to safely add weight. The coaches are great, really attentive and will always correct posture etc which is what I wanted. The classes are really varied, and the team are always updating and changing aspects of the gym to keep it fresh. I’ve been on organised hikes with the gym too and we’ve built a great little community with the coaching team

Fantastic experience: Over the past 12 weeks of the Lift Off Programme, I’ve been really impressed with the progress I’ve made with GNS Leixlip. The coaching and guidance have completely changed how I approach fitness, nutrition, running and strength training. Training has also complemented my running massively, which was one of my main goals, and I know it’s going to benefit me in my upcoming races. The atmosphere in GNS is brilliant, and the whole coaching team make the experience even better. I’ll definitely be staying on for the next couple of months and I’m excited to keep progressing towards my next goals. Couldn’t recommend GNS enough!!

Fantastic experience: I’ve been training at this GNS for a while now, and I couldn’t be happier with the experience. What really sets this gym apart is the personalized attention. The trainers are knowledgeable, encouraging, and genuinely invested in helping you reach your goals. They take the time to tailor workouts to your needs and push you just the right amount to keep you motivated. Since introducing strength training into my weekly routine , I've seen great benefits outside the gym with other activities like running, feeling stronger and hitting pbs . If you’re looking for a supportive environment with professional guidance GNS is a fantastic choice.

Fantastic experience: I’ve been with GNS for well over a year. It’s 35-45 minute classes that pack a lot in. I do different classes each week and learning all the time. I’m getting stronger and being pushed to try more every class. Brilliant coaches and a friendly community vibe in the gym. Highly recommend it!

Fantastic experience: GNS is the best gym I have been a member of! The timetable has a huge variety of classes and times. Everything runs like clockwork, you get in, work hard and are back out before you know what happened! The trainers are all of an incredibly high standard and constantly push you to improve and get the best out of yourself. I would highly recommend GNS to anyone, young or old, starting their journey or wanting to push on in their fitness.

Fantastic experience: I’ve been with GNS Fitness for 2 years now and honestly couldn’t recommend them more. What makes it so easy to keep coming back is the variety of classes and the way the trainers are always pushing you to be your best. The short class format is perfect – it fits so well into a busy daily routine, but still leaves you feeling like you’ve had a proper workout. Since joining, I’ve not only lost weight but, more importantly, built real strength and developed a much healthier lifestyle. The atmosphere is supportive, motivating, and genuinely enjoyable. The PT classes keep you accountable and ensure you are always progressing. The trainers always push you to your best. I would really recommend GNS fitness!

Fantastic experience: I’ve been a member of this gym for 14 years now, and I can honestly say it’s one of the most welcoming, encouraging, and uplifting environments I’ve ever experienced. I joined in my early 40s as a busy, working mother of three, not exactly bursting with fitness enthusiasm, but knowing I needed to do something — and now, in my mid-50s, with creakier joints and maybe more responsibilities, I still am still walking through those doors. What’s kept me going all these years isn’t just the equipment or the classes — though those are excellent — it’s the people. The trainers and staff somehow manage to make you feel like you're an elite athlete, even on the days when you're dragging yourself in after a long day of work, feeling more like a heading to the sofa than the gym. They’ve encouraged me when I’ve had no energy. They’ve cheered me on when I didn’t believe in myself. They’ve tailored workouts to suit my ability, respected my limits, and celebrated my progress, however small. There’s no pressure to “keep up” — just support to keep going. Over the years, this gym has become so much more than a place to exercise. It’s a space where I feel welcomed, supported, and valued. Whether I’m showing up full of motivation or just trying to keep moving, they meet me with positivity, humour, and genuine care. That kind of atmosphere is rare and I am so grateful for it. To anyone who thinks gyms are only for the young, the super-fit, or the ultra-motivated: this place will prove you wrong in the best way. No matter your age, stage, or starting point, you’ll be welcomed, encouraged, and empowered. Fourteen years in, and I’m still going — stronger, healthier, and with a whole lot of gratitude. Looking forward to the next fourteen!!

Fantastic experience: I did the 6 week liftoff programme and found it was a great way to get started in GNS. The trainers are all really helpful and encouraging and it’s been great to see and track progress. The programme was a great way to start off because of the extra support and weekly check ins with Patrick. Overall I’ve built strength, have more awareness of nutrition and am looking forward to continuing to progress. I would highly recommend GNS.

Fantastic experience: I’d hugely recommend GNS Fitness for all-round fitness, strength & cardio training. I attend ar least 5 times a week and I love it - it’s a core part of my day. For me, the strength training has been particularly life-changing. I’m currently signed up to GNS Fitness’ PT training package based at St Brigid’s GAA club. I’ve been training in St Brigid’s gym for nearly 12 years! In that time, different vendors have offered training / membership, and I’ve been with GNS for about 18 months. GNS is the best gym & training service I’ve attended. For me, the consistency of training, and attention to technique by trainers, are what I love most. Classes are very well-organised, never cancelled and are consistent in terms of approach, regardless of which trainer is taking them. The trainers are excellent at correcting technique, as well as pushing you where needed. (Sometimes you’ll realise you’ve been doing an exercise wrong for years!). The schedule and classes are changed regularly so that you continue to develop and don’t get bored (but not so much that it gets confusing!) The PT sessions are excellent particularly for women over 40 looking to build strength. Trainers work to each individual’s capability so no-one is put under pressure, but will be challenged. You’ll rotate between different sections / area of focus so will develop overall strength and body conditioning and avoid injury. The biggest surprise for me was how much I enjoyed the Pilates sessions, and how effective they have been at improving flexibility and core strength. It’s really helped my running technique and avoiding injury. A really nice feature of GNS is that it’s suitable for everyone, of any age and prior experience - whether doing classes or PT sessions, all exercises included will work for all levels of fitness and ages. The trainers treat everyone the same, there are no ‘favourites’ (not always the case in every gym!). Everyone is also really friendly and take their work seriously. It’s the most organised gym I’ve worked with too! Classes are booked on an app, with an excellent range of times, membership options are clearly explained and payment is straightforward. I’d highly recommend GNS Fitness for anyone considering training, and would like an all-round solution to include cardio, strength and conditioning.

Fantastic experience: I have seen amazing results since I joined GNS nearly two years ago . My weight is down and I have really built up my strength and core through PT sessions and Pilates. I thought that cardio was key to losing weight but my body shape has completely changed with strength training. The trainers are all really supportive and pushed me to reach my full potential . This is something that I wouldn't have done if I had been training alone in a gym. 30 minutes PT sessions really suit my busy lifestyle .

Fantastic experience: I just completed the 12 week Liftoff Programme last week in GNS Fitness Navan Road. I decided to do this programme as I haven’t worked out in a gym properly for over two years and I need professional guidance and support. I lost just over 8kg in the 12 weeks but more importantly my lifestyle has completely changed thanks to the Liftoff programme. My sleep has improved I’m out walking everyday, I have a better understanding of nutrition and the importance of what I eat. I really enjoy the PT sessions they are always challenging but it’s 30 minutes that really flies by. People I haven’t seen in a while noticed I’ve lost weight. After 12 weeks on the program the biggest takeaway for me is going to the gym and tracking my nutrition is just part of what I do now I don’t have to think about it. As a man about to turn 50 I knew I need to adapt a healthier lifestyle but I also knew I couldn’t do it alone. The team at GNS are extremely professional and supportive and a special thank you to my PT Patrick, Eoin and all the team in GNS Fitness Navan Road. I have signed up now as a member to continue my fitness journey and I would encourage anyone thinking about joining a gym or looking for support on how to improve their fitness levels to contact the guys at GNS Fitness.

Fantastic experience: GNS Fitness in St Brigid's is a great gym! The team are really knowledgeable and will tailor everything to your specific needs. The PT sessions let you work on every part of your body and the gym classes are challenging but fun. If you are looking to lose weight, get stronger or just want to have fun whilst exercising, I would definitely recommend GNS.

Fantastic experience: This week marks my one year anniversary as a member of GNS, the journey has been life changing for me, I have gone from someone who was embarrassed and nervous to go back into a gym after ten years, to really looking forward to every class, staff are incredible and will tailer work outs to suite your ability and injuries . It really is a fun place to work out and meet good people

Fantastic experience: After years of trying the different large commercial gyms where its more about Instagram and the aesthetics it's just fantastic to be in an environment where trainers work with you on your own goals, fantastic instruction and support and a really friendly encouraging space, especially when your just starting out and scared of anything over 2Kg Great variety of classes and training sessions. Sessions/ classes run on time, no wasting time hanging around so if your time poor you get you work done and off you go. Im just over a year with GNS and highly recommend GNS for helping achieve your health and fitness goals.

Fantastic experience: I’ve been with GNS fitness for over 2 years. It’s been a super journey getting my fitness back on track, after years of no plan etc. The team there listen and work with you and know when to push you which is what I needed. The fitness class and PT options especially in the mornings work for me and the options and flexibility in booking them to suit your week and work commitments make GNS stand out from the crowd. They bring in new classes and vary the PT regularly. I’ve no hesitation in recommending GNS Fitness to anyone thinking of getting back into fitness or trying something new.

Fantastic experience: I've been a member of GNS at their Castleknock Gym for three years, and I cannot recommend them highly enough. The coaches are amazing, and really focus on the goals of every individual. They have really helped me rebuild my physical fitness and flexibility, and I have achieved things I never would have believed thanks to their support like completing Hell and Back and the Dublin HYROX last November. There is a great mix of classes and small group training, and it is clear that Shane and the team really focus on community - which makes everything feel more fun and connected. I also love that they never stop looking to improve and develop their services, whether that's new equipment or classes, they make sure we're kept on our toes and feeling challenged. If there was a sixth star, I would happily give it.

Fantastic experience: I have been a member of GNS for over a year now. I only do the classes due to travel and work commitments, however given the range and number of classes that take place six days a week this is more than enough to keep me fit & healthy. GNS has excellent equipment that seems to be always updated, full of range of ERG machines (Ski/bike/row) and also incorporates Hyrox classes. One major plus for me is that all the coaches are fully qualified and put safety and posture/technique above everything else to ensure no injuries take place and that I'm actually doing the exercises assigned correctly (for years I wasn't in other gyms!) Worth noting it's excellent location which cuts down on time spent to and from the gym also. I'd highly recommend this gym to anyone looking to get fit and join a really nice gym community.

Positive experience: I have been with GNS about 8 years.I love the variety of classes to choose from.The early mornings are great, it sets you up for the day .For me it is about building up strength and muscle tone.Coaches have a great ability knowing when and how much to push you.Because most classes are 30/35 minutes long, it doesn’t take over your day and I find myself doing 5 or 6 classes per week.Love the pilates classes, they really work on your flexibility and core area.If you are thinking about it, definitely give it a go, you won’t regret it

Fantastic experience: I have been a member of GNS for over 10 years! I can honestly say that joining GNS has been one of the best decisions I’ve ever made for my health and well-being. Shane and all his staff are so friendly, supportive and passionate about helping members reach their goals - whether through PT sessions, group classes or simply offering a word of encouragement, they always go above and beyond. I especially enjoy the Pilates classes. GNS is a place where people of all fitness levels can feel comfortable. I highly recommend this gym!

Fantastic experience: If you're looking for a place to transform yourself and achieve your fitness goals, I highly recommend GNS. The staff here are incredibly friendly, helpful, and knowledgeable. They always greet you with a smile and are eager to assist with any questions or concerns you might have. Since joining, I have become the fittest I have ever been and even competed in some fitness games which I would never have done a few years ago. The comprehensive fitness programs and the personalized attention from the trainers have made all the difference. The welcoming atmosphere and the results I have seen keep me motivated to come back regularly. One of the standout features of this gym is how the staff push you to achieve results. Whether it’s through one-on-one training sessions or group classes, their encouragement and expertise ensure that you are always progressing and reaching new milestones.

Fantastic experience: Couldn’t recommend the guys in GNS high enough All the coaches are so friendly, motivating, helpful and are great at creating a welcoming and encouraging environment

Fantastic experience: I started the GNS Lift Off program because I needed a structured approach to help me lose weight and improve my overall health. The program provided me with a customised workout plan, nutritional advice, and defined weekly goals. The weekly check-ins are a great way to measure your progress and get back on track if you have a bad week. The workout’s are only 30 minutes long, extremely enjoyable and deliver great results. I was really surprised at how quickly I could see the progress I was making. Within a short period of time, I started losing weight, my energy level was increasing and my strength was improving.The coaches are so supportive and are always there to help and always challenging and encouraging you to get to the next level. One takeaway from the program is that consistency is key to achieving great results, regular workouts, and adhering to your nutrition plan will pay dividends. The program has ended for me, but the journey continues as I have signed up for membership. For anyone considering the GNS program I would highly recommend it, you won’t regret it when you see the results.

Fantastic experience: Joining the GNS Liftoff programme was one of the best decisions I’ve made for my health and fitness. My initial goal was simply to become fitter and healthier, and I’m thrilled with the progress I’ve made. I’ve lost weight, gained more energy, and built a sustainable routine that fits seamlessly into my everyday life. One of the biggest wins has been learning how to maintain a balanced diet without giving up the foods I love. What surprised me the most was how effective the workouts are—without needing to spend hours in the gym. The sessions are quick, enjoyable, and deliver great results. The support from the GNS team has been incredible; they are knowledgeable, friendly, and genuinely invested in helping you succeed. If you’re considering joining GNS, I highly recommend it. They have fantastic programmes and classes that deliver real, lasting results while keeping fitness enjoyable, accessible and fun.

Fantastic experience: I started the lift off program to build a routine of exercise and healthy eating that I could sustain and would become part of my everyday life. What I have enjoyed most with GNS fitness is the attention and dedication of the instructors who know when to push you so you are always improving. I have become stronger and fitter than I have been in years and am setting new goals and targets for myself supported by the team at GNS!!!!

Fantastic experience: Joining GNS is the best thing I have done for my health and lifestyle in many years. I started the liftoff programme initially to work on strength and flexibility. As well as making good progress there, I have noticed benefits across my physical and overall health in terms of fitness, energy levels and quality of sleep. It has also given me the headspace to learn about nutrition for myself and for my family as well as helping me to manage the demands and stresses of life which has helped me to prioritise the things that matter most. The coaches provide brilliant support and advice and are key to encouraging and challenging me to progress. I would highly recommend GNS - the benefits are endless.

Fantastic experience: The GNS environment is super friendly, with a team of highly qualified trainers ready to answer any questions and make it all as fun as possible. I had struggled for years to consistently follow any nutrition or training program as I have heavy work commitments with lots of long haul travel. I wanted a better work life balance. I started the GNS 12 week transformation program in September to get support to break these old patterns and build up my confidence. Eoin set out tailored weekly goals and with his regular encouragement and guidance, I have dropped a dress size and can now complete a cardio session without needing a new lung! But the biggest win, by far is that I’ve developed some really good habits that are very sustainable even when life gets busy or when I’m traveling. Eoin has taught me a lot, always focussing on consistency and making small changes. It really works! I’d highly recommend Eoin and the GNS crew, you won’t find anywhere better to help you achieve your goals.

Fantastic experience: I started the Liftoff program with GNS Fitness because I was looking for a structured approach to improve my fitness and overall health. My initial goals were to lose some weight, build strength and establish a sustainable fitness routine. I have been a runner for many years but felt my running had become stale, going at the same speed regardless of the distance I was running. My experience of the program is increased muscle tone, a significant improvement in my strength and some weight loss. I have become more disciplined in my eating, more conscious of my nutritional intake and established a routine. I have been surprised how even when I am very busy and have multiple things going on, I have been able to stick to my fitness routine, make good food choices and prioritized my fitness goals. My friends have commented on how I am more toned and that my clothes are fitting better, and I am in better form. My biggest takeaways are the importance of consistency and how small, regular efforts really add up over time. I have gained a better understanding of how to fuel my body with the right nutrition to support my goals. My running has really benefited with my speed coming back. A recent half marathon felt much more comfortable, and I was much stronger than previously, even beating my friend who has always been faster than me! The program offers structed guidance and flexibility. It is tailored to fit your individual needs and the support I got from Patrick was fantastic. He was available to answer any questions I had and gave great tips and advice. The results speak for themselves, and it was a great investment in both my physical and overall wellbeing.

Fantastic experience: What sets GNS Fitness apart from other gyms is the quality of the trainers. They are always at hand to encourage clients to achieve their potential. I recently completed the 12 week Liftoff programme and found it hugely beneficial in helping me set and achieve holistic wellbeing goals, including nutrition, sleep, exercise etc. GNS offers a great variety of group PT session and other exercise and conditioning classes suitable for all fitness levels. I have recommended GNS Fitness to friends.

Fantastic experience: Everyone is so friendly and I highly recommend this . <3

Fantastic experience: Up to a few months ago, I had never heard of Hyrox, so when GNS Leixlip began a Hyrox training programme, I decided to sign up. The programme involves personal training session’s specific to the strength’s and techniques I need to develop to participate in Hyrox. As Hyrox is 50% running, a running programme incorporating interval and long run’s was devised to help build speed and stamina. Pilates and Hyrox specific classes which replicate the excercise stations included in the competition are also included as well as invaluable advice on nutrition and recovery, and if all that was not enough, simulation event’s are organised every four week’s which gives the best preparation for the real thing.This is one of the best programmes I have ever participated in. I have no doubt that come November 2024, I will be ready to take part in my first Hyrox event and I am really looking forward to it. A huge thank you to the staff of GNS Leixlip for their help, encouragement and professionalism.

Fantastic experience: Excellent gym with really helpful, knowledgeable and friendly trainers. Highly recommend!

Fantastic experience: Good training! Hard work!

Fantastic experience: I was a bit surprised with the early starts when I joined GNS Fitness but 2 years later I can’t think of a better way to start the day. My intention was to train a couple of times a week but because of the variety of classes and personal training options I usually go 4 to 5 times a week. I enjoy all the options I choose and would find it hard to drop one. The training is challenging but the benefits outweigh this for example lots of energy and mental and physical strength. The trainers know how to help you reach your limits in a way that suits you. My attitude is not everyday is a personal best day, but I still want to show up and do my best. Consistency is a big part of what GNS do and they do it very well. You are kept on your toes with changes here and there, but it’s always consistent and interesting. The atmosphere at GNS Fitness is welcoming and fun and I would highly recommend GNS Fitness to anyone thinking of looking after their health and getting fit.

Fantastic experience: Fantastic gym experience, very well organised & professional. The personal trainers are really excellent. Highly recommend

Positive experience: good gym

Fantastic experience: Excellent staff

Fantastic experience: Excellent staff

Fantastic experience: I've been attending GNS for 8 weeks and and am delighted with the results. The team are really strong on customer service and go to great lengths to ensure that their members get the best for their time in the gym. I've lost weight, inches and have a new healthy eating plan that's given me more energy. I haven't felt so good in years. It's by no means easy changing habits of years but with the excellent support of Shane and the GNS team it is possible. I've signed up for membership for the coming months!

Fantastic experience: If your looking to get in shape or just looking to maintain peak fitness don't look beyond Shane Lyons and GNS fitness.. Very professional and helpful service