Eivi (pronounced ee-vee) is the next-generation metabolic health service from Tony Martin, built on 30 years of research into blood glucose. It allows you to understand and take control of your metabolism, and coaches you to natural weight loss that lasts.
Join the waitlistBorn and residing in Cork, Ireland, Tony Martin is one of the leading conditioning coaches in the country, and a pioneering scientist in nutrition and exercise.
Tony Martin's main focus for 30 years has been a new model for understanding energy in the body. For over 10 years, he has advocated for a new science of metabolism, centred around blood glucose.
He was the first to identify glucose as the governing metric of the body's energy system. His theory has now been tested and validated by 15,000 people, with astonishing results: significant weight loss, more energy, better sleep, chronic conditions alleviated.
Tony Martin's forthcoming book details the new understanding of biology, based around blood glucose data, that makes Eivi possible. The programme follows the methodology laid out in the book.
Read the bookThe precursor to Eivi, using Tony Martin's system, was Limbo, a project that ran from 2021 to 2025. Over 15,000 people used the system, with amazing results that transformed their health for the better.
Eivi builds on the Limbo project, and will advance the science of metabolism even further. Unlike its forerunner, Eivi will focus only on Ireland. All advice will be tailored to the Irish audience, and members can join online sessions personally hosted by Tony Martin.
As part of the program, you wear a CGM (continuous glucose monitor) – 2 sensors per month, lasting 15 days each, are included in the price – that measures your metabolism.
Inside the Eivi app, you'll see how different foods, drink and exercise impact your metabolism, and get coaching from Tony Martin and his team on step-by-step changes toward your goal.
The ease of use, and the nudges to push towards healthier options. It served as a reminder for me. Excellent resources and guidelines available. The interaction with Apple Health really helped manage weight and exercises.
— Eric
I found this a great help to figure out the specifics of how my metabolism works. I would recommend giving it a try. I have implemented better choices since I started using it and I'm finding it easier to stick to the changes I've made. It's a great tool to use along with good nutrition.
— Dee
It was difficult enough at the start and the prompts through the App were annoying at times. However, nearly 8 months down the road, over two stone lighter and feeling healthier, I'm pleased that I have adopted new habits and approach to planning my low carb, high protein and fibre meals.
— Edwin
[The system] was excellent. It kept me focused and showed me the impact of poor food choices on my blood sugars. I would definitely recommend it. It prompted me to keep hydrated and encouraged me along the way.
— Sarah
[The system] took the guesswork out of losing weight and becoming more mindful of what I eat. Still on the journey but could not have reached 15 kg down without it.
— Paula
I'm happy with my personal results; I've lost 18 kg in a few months.
— Dermot
I've spent years working in the beauty and wellness industry at a global level, and I've seen every diet, hack, and "solution" out there — but absolutely nothing has impacted my health and body like this. Since starting the system with glucose monitoring, I've lost 21 kg, gained 7 kg of muscle, and I'm now completely prescription and medication free. For the first time in my adult life, I feel like I'm actually in control of my metabolism, energy, and weight.
— Andrew
[The system] stood out to me as it was data driven — being able to see exactly how my body reacts to different foods made the journey easier and more sustainable than anything else I had tried. I lost 30 kg in about 5 months and kept my subscription for another couple of months as I enjoyed the data side of things. I would have no problems recommending it to someone on a fat-loss journey, or to someone as interested in their own data as I am.
— Dylan Kelly
In just a month, it has totally changed how I think about food, diet, and metabolism. If you'd asked me a month ago what is 'healthy' I'd have told you so many things that I now know are just not true. Being able to 'see' my metabolism in real time has been such a huge help. I'm down 5 kg and already feeling better than I have in many years.
— Grainne O'Connor
Being able to see your own unique blood-glucose reactions to food is like having a constant personal educator, coach and trainer with you at all times. You can see how to get results fast if you eat, exercise and do things in a way that suits your own system. The support in the community and 1-to-1 if needed is amazing. There's constant education and awareness building. It's so much more than just a blood-glucose monitor — it's a package providing health awareness for life.
— Helen O'Flinn
A really great way to get to know your metabolism and what works to lose weight. I lost 16 kilos in 4 months.
— John
This is a five-star review for the plain and simple reason it's delivered what previously proved impossible. As a sugar seeker all my life, I signed up to try to help me stay away from the sweet stuff. 10 weeks later, 10 kg lighter with improved cholesterol, I was stunned to fit into my wedding dress from almost 30 years ago. It isn't always easy and for sure I could list complaints, but that's beside the point. On a choice-by-choice basis it enabled me to more often than not make the choice that's better for my health. A game changer that nothing else has delivered.
— Linda
After 2-3 years of trying to lose weight, it has helped me succeed where I had failed in the past. It is hard work and there are sacrifices like most weight-loss journeys, but the difference with this is I now have the information to know what foods affect my body in a good and not-so-good way. To see these effects in real time on your monitor is startling and so effective. I have lost weight and gained so much useful, beneficial information for life.
— TF
After having tried all the faddish weight-loss plans over the years (protein diets, the new injectable drug) with no sustainable success, this plan is remarkable. The ongoing feedback regarding food types and times is most helpful and the constant monitoring through the glucose levels in the app is a whole new experience. I lost 6.5 kg after my first two weeks — effortlessly — with the program. Don't be afraid to give it a try. I'm dumbfounded by how effective it is.
— Johannes
It provided me with fascinating insights on what actually works for me — from when and what to eat, to what time working out really works for me. I have found the individualised information fantastic. I have discovered how intermittent fasting really works for me and have avoided 'fad' eating, just refining to get better results. The app and interaction has gotten better and better and continues to do so.
— Gillian
I have literally tried every single diet but never anything as supportive and revolutionary as this. I am just over 2 weeks in and 3.7 kg down. While I know a lot about nutrition, I never knew exactly how my body would react to certain foods. It is the most tailored plan you will ever do. I cannot recommend it enough!
— Laz
I have been using the system for 8 months now and have lost 5 stone (33 kg). It has been the most consistent, steady and easy weight loss I've ever had. I am 45 years old and have been overweight all my life, so I'm not saying that lightly. The community is supportive and lots of improvements have been added to the app since I joined. Apart from weight loss I have had lots of other positive improvements: more energy, reduction in brain fog, no cravings and a more regulated appetite. [It] has given me a new lease of life.
— C. Gibbons
I started in July 2023 and it's been my constant companion since. I find that it helps me manage my weight in my own way. I do stray a bit, but I forgive myself and get back on track quickly. It's the most positive way to lose weight I've ever experienced.
— Siobhan
The benefits are life-changing, and I don't feel tempted to revert to some of the old foods I had in the past. I have moved on from them as I can actually see the negative impact of glucose spikes on my body in real time.
— Richard
I've been on [the system] for the last six months. By following the programme, I saw results within a short couple of weeks. Saw bonus side-effects from my Apple Watch too — my number of breaths per minute dropped in the period, as did my average heart rate.
— Dermot
It allowed me to zone in on and remove or restrict the foods that were holding me back from achieving meaningful weight loss for years. The real-time feedback on food choices really helps you keep on track — there is no hiding place. I lost 8 kg in 2.5 months, purely down to better food choices, thanks to [the system].
— Paul
I am just coming up to two months and I am really close to my goal. I am delighted with the progress, the process and what I have learned. I was really unsure if I would be able to manage a low-carb diet, but actually with help from [the system] I found it very doable. Would recommend.
— Anna
I'm a believer that what gets measured gets done. It allowed me to see in real time what my day-to-day eating was doing to my body. I knew I had a sweet tooth, but was also shovelling a lot of what we are told are healthy carbs into me — had no idea of the impact. I lost 25% of myself, reversed my pre-diabetes and also eliminated my lifelong migraines. Life-enhancing is an understatement.
— Helen
Started on [the system] in Jan 2022 and lost 20 kg through changing habits and bringing some consistency to what I was doing. After 18 months I stepped away to see what habits had become engrained, and I'm delighted to say that most of them stuck. I have slowly gone back up 5 kg but remain thrilled to be 15 kg off my starting weight, and I now know what I need to do to maintain this.
— John