Conversations Around Health, Nutrition & High Performance
Evidence-based nutrition, clinical expertise and Personal Performance Precision for driven professionals, competitive and professional athletes, high-performing teams, research organisations and those seeking an expert voice on performance.
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“I thought I needed a diet plan; but that is exactly what I didn’t need. I gained the knowledge and support and the balancing of everyday life around training along with personal life too”.





I’ve learned so much stuff I didn’t even know existed, different types of proteins, when to take, when to take dairy, how to stay full, what’s a good probiotic to boost my immune system…I’m always learning, I think I’ve really improved” . –





Just wanted to email you with a big thank you for helping me to manage my eating regime. I was very pleased with my race results.





The work we have done together has covered race day nutrition, everyday nutrition, and has helped me have a better relationship with food. So often we have coaches for the sports we do, yet no guidance or coaching when it comes to nutrition. Working with Claire has really helped up my performance. Thanks to Claire and Fourth Discipline for all the continued support.





“swam my fastest 100m since I stopped competitive swimming as a kid…. I am feeling great”





A big thank you for helping me to manage my eathing regime. Meal advice before the race seemed to really help keep my stomach settled on race day. I was very pleased with my race results. Really impressed by how good I feel and not so tired. A lot of this has to do with my new meal plans for training and racing.





I felt at the time when I started with Claire that the quality of my life wasn’t very high and I was really struggling to enjoy my training. I certainly wasn’t enjoying food and it’s safe to say that she worked with me every step of the way to transform my life everyday.





“Claire’s methods didn’t leave me feeling hungry or depleted of energy like fad diets can, in fact I couldn’t quite understand how I was able to eat quite so much and feel so full and strong………what a difference having a nutrition plan to work with made. My performance rocketed and I completed my two dreams in one season. Medalling at the European Middle Distance AG triathlon and smashing my first ironman”





“You quite literally changed my life; I could not have done this without you”





“helped me relearn that “Food is food”.Fed up of seeing zero results through yo-yo dieting, I had tried intermittent fasting, Keto and various other diets. I wanted a lifestyle change and wanted to be able to enjoy food without the guilt associated with “bad food”. I can now enjoy eating fruit without feeling guilty! I’m confident I will reach my goal weight comfortably and remain constant”





I wanted to understand what food is good for me as I trained and when doing races…..some foods did not agree with me but I did not understand why……..Gave me these answers and has helped me improve my race times as well as eat more sensibly. My lifestyle has benefited from this enormously. I received expert advice on what to eat during (injury) ….incredibly helpful and informative and I was impressed at her wealth of knowledge & experience. “Claire helped me understand what foods work for my body. I’ve improved my race times and transformed my lifestyle.”





claire challenged my unhealthy food beliefs in an empathic manner and suggested changes that were specific and achievable whilst continuing in my recovery from anorexia. “her knowledge and support have been really valuable in the progress I have made over





Since working with Claire, she’s made a huge difference to the way that I’ve been able to execute my training sessions, bring the energy that I need at the right times to competition, and get the most out of recovery. I wholly recommend giving Claire a call. The biggest thing to take away is that everything that we do is absolutely manageable!





Where I’ve really benefited from working with Claire Fudge is around the timing of food around my training, but also particularly around travel. Working with Claire on a plan so that I don’t go for chocolate in the airport or at the petrol station, but have snacks and planned timing along the way has really been beneficial. She’s great at delivering helpful tips that are quick and easy to do.





“revolutionised how I eat during …. big sessions. From my former race snacks mindset to a proper fuelling strategy-it’s made a demonstrable difference in my form”





I first met Claire Fudge of 4th Discipline in the summer of 2021 for sweat rate test to better understand his electrolyte and hydration requirements for training for a Guinness World Record attempt for an endurance event.
I came away thinking I would like to work with the 4thdiscipline team as they provide nutrition coaching for performance to professional athletes and people like me who have been blundering through the nutritional needs of heavy training.
4thdiscipline know their stuff and their engagement with me was focussed on my individual needs basing my education and planning on science. At all times they worked with me in a calm, supportive and realistic fashion.
For anyone looking to improve their understanding and knowledge of food and sport I can highly recommend them!





Just wanted to email you with a big thank you for helping me to manage my eating regime. I was very pleased with my race results.





I’ve been running for quite a few years, but I just kept running out of energy. Training for a marathon, I got in touch with Claire. I thought she would just give me a food plan, but she basically educated me on what I needed to eat and the right food groups to eat together. It was just an absolute game changer. I did my marathon with absolutely no problems—didn’t once run out of energy.





I went to visit Claire for a sweat test. This was really useful and informative experience and Claire is very knowledgeable and helpful.





A friend who is a no nonsense athlete was working with Claire and I thought she would be good for me as although not a ‘real’ athlete myself, I wanted to understand how to fuel for 70.3 training and simultaneously sort out my ongoing chaotic relationship with food and eating for ‘normal life’. I knew Claire had an understanding of and worked in both areas.





I cam to see Claire in the run-up to my first ironman event. Within days of following her advice, I saw a noticeable difference; Training is improving all the time. All is on track for nailing the nitrition for the ironman event next month!





“ I could write so much more . Claire has done an amazing job, and been great, provided consistent, caring support along a tough path to improve my nutrition and expert, individualised advice for fuelling (…) Claire is so well informed, not only in sports nutrition and supplements but also (…) in other areas, including sleep; protein, and ageing (in the context of) a healthy balanced nutritious diet to meet daily and training needs. I have learnt so much and feel so much more equipped to fuel”





“before my first 70.3 …we identified my intolerances for everyday life, (she helped) fuel my training sessions and put together a plan for the lead up to my race and race day itself. “Claire being a triathlete herself, her advice is second to none”





“ frankly i hadn’t got any knowledge….Claire was amazing! She helped me plan out my nutrition… to make sure i was getting the best performance (this) allowed me to fully concentrate on the competition.. “best competitive season of my life so far, gaining my first GB senior vest competing at the Athletics World Cup, 2nd place at the British Championships and becoming England Champion gaining my first England Senior International vest”





“I run better, I feel better, I’m not getting injured, and I sleep well”. “I thought I needed a diet plan; but that is exactly what I didn’t need. I gained the knowledge and support and the balancing of everyday life around training along with personal life too”.





Great first meeting and assessment with Claire. A huge amount to take in but Claire guided me through the first stage. Have some clear first steps to work on in my journey to improving my hydration and nutrition to support improved training and race performances.





The moment someone says to you, ‘you know the symptoms you are experiencing are not normal’. Was really the moment the journey began to experiencing a normal existence. “years with food intolerances, …. impossible to control …..I am now free to live my life without symptoms and all of the related issues I was experiencing (anxiety about going places, worrying if I was going to be ill when I went out, the list continues…) . all of the guesswork (was removed) ….introducing each element in bitesize chunks ensured it wasn’t in anyway daunting, and allowed the outcome to be obvious . Having the support and expertise throughout was such a huge benefit, and now I can everyday apply the principles learnt with confidence, knowing they are specific to my needs. Being normal feels amazing!”





“ Claire went into a lot of detail, preparing nutrition plans for me and for ½ and full races and also assisted me with recovery nutrition. She is very supportive and knowledgeable. I would highly recommend her”





I went to Claire looking for a quick fix, however Claire explained in detail the process and why I needed to take a different approach to hit my goals. Claire was very encouraging, providing weekly support and further analysis on my progress.





“help with a long standing issue, It was her personality, honesty and openness which gave comfort in trying her methods. Over the year that I have spent working with her, I have gained the knowledge and insight to manage my symptoms, giving me a new found sense of freedom. I would wholeheartedly recommend Claire to anyone who needs nutritional advice.”





I have worked with Claire for over a year having suffered with disordered eating from an early age. I knew I needed to do something to change it.





I was a relatively competitive athlete but wasn’t getting any better. My relationship with food was challenged, but Claire Fudge unzipped all of my psychological hang-ups and addressed it with science. It freed me from worrying, and I actually started enjoying food again. It’s an educational investment, a change-in-whole approach, and something I will carry through for life. I can’t recommend her highly enough.





“have really appreciated the holistic approach to your guidance that reflects a genuine desire to teach me the skills I need to become the healthiest and strongest athlete I can be”





Struggling with allergies, intolerenaces and anxiety around food for many years had a huge umpact in my daily life, being able to properly fuel for marathon training, recovery and race days. Symptoms have improved dramatically, my training is much more efficient and my confiedence around food has grown. I have lost count of the different diets and plans that I have tried; I have seen a really positive change. I really couldn’t recommend Claire any more highly.





I started working with Claire when I realised that I thought I knew what I was doing but I really didn’t when it came to sports nutrition. I’d been competing at an age group level internationally in triathlon and since working together, my performances have improved together with making podium places as well as making the jump up to 70.3 a successful one.
Frequently Asked Questions
The right service depends on whether you are looking for support as a driven professional, a professional who competes, an athlete, a team, a research organisation or an event organiser.
If you are unsure where to begin, book a discovery call and we will guide you towards the most appropriate pathway.
No. I work with professional and Olympic-level athletes, athletes on talent and high-performance pathways, competitive age-group athletes and professionals who train, race or compete alongside demanding careers.
The level at which you compete is less important than your commitment to improving your health, fuelling and performance.
I also support driven professionals who are not athletes but want to improve their energy, focus, resilience and long-term health.
Personal Performance Precision is my approach to creating nutrition support that is fit for purpose and designed around the individual.
Generic plans are built for an average person. They do not account for your physiology, health history, symptoms, training, workload, lifestyle, preferences or goals.
Personal Performance Precision brings these factors together with clinical expertise, performance science and meaningful personal data. This allows us to identify what is affecting your health and performance, then engineer a practical strategy around your specific needs.
Like a tailored suit rather than something taken straight from the rack, the strategy is shaped around you: how you live, how you move, what your body needs and what you are working towards.
The result is not simply more nutrition information. It is a clear, personalised approach designed to support your energy, health, recovery and performance now and over the longer term.
In the UK, dietitian is a legally protected title. Dietitians are regulated healthcare professionals qualified to assess and treat nutritional problems, including those associated with medical conditions.
The titles nutritionist and nutritional therapist are not legally protected, so qualifications, training and experience can vary. Registered Nutritionists and nutritional therapists who belong to recognised professional bodies may have completed relevant training, but their scope of practice differs from that of a registered dietitian.
As a Registered Clinical Dietitian and High-Performance Nutritionist, I combine clinical assessment and evidence-based care with specialist sports and performance nutrition.
This is particularly important where symptoms, blood markers, low energy availability, gut issues, injury, REDs, disordered eating or a medical condition may be affecting health and performance.
Yes. I provide specialist clinical and performance nutrition support for athletes and active individuals with eating disorders, disordered eating, Relative Energy Deficiency in Sport (REDs) and low energy availability.
Support may include nutritional rehabilitation, restoring adequate fuelling, reducing nutrition-related risk, supporting training and recovery, and working alongside doctors, psychologists, physiotherapists, coaches and other members of the multidisciplinary team where appropriate.
Where clinical risk is present, the priority is always safe, coordinated and appropriate care.
A clear plan for what, when and how you eat can be valuable, but lasting change requires more than a prescriptive meal plan.
Where appropriate, I provide personalised meal structures, fuelling plans, practical food ideas, competition strategies and guidance around timing, recovery and preparation.
These sit within a wider approach that considers your health, schedule, training, travel, preferences, symptoms and goals.
The aim is to give you a strategy you can understand, adapt and sustain rather than a rigid plan that only works temporarily.
Most individual support is delivered through a structured programme rather than a single appointment.
A first consultation begins the process of understanding your symptoms, patterns, data, health history, training demands and goals. Follow-up support allows recommendations to be implemented, reviewed and refined.
One-off specialist consultations may be available for clearly defined needs, such as an expert review or sweat sodium testing.
Please contact the team to discuss the most appropriate option.
You will be guided towards the service that best matches your goals, health needs and performance demands.
Where appropriate, the first step will be a discovery call or initial conversation to understand the support you are looking for and whether the service is the right fit.
You will then receive clear information about the recommended pathway, what is included, the expected timescale and the investment required.
A limited number of new clients are accepted each month to maintain the depth and quality of personalised support.
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