Sustainablefitness Reviews 

I am extremely happy to have joined the program. So far Darren and Kris have been superb and very supportive. I started at 102kg six weeks ago. Pre diabetic, enlarged intestine and liver and a lot of visiral fat around my organs. I am now down to 88.6kg and feel super! My energy levels have gone up. I think more cleared and just love how I feel and look. I am fitting into clothes that when I started I could not fit into and get lots of comments about I look. I would highly recommend this program to anyone that wants to still enjoy life without a fad diet. I am really enjoying the food I prepare and weigh and have not touched any junk food since starting and neither do I want to. If you want your life back, then come join this team. It trains you for life and to change your habits for the better. Thank you to all the team at aviation fitness for the continued support and guidance.

I am extremely happy that I joined Darren’s Coaching. Before this, I had been trying a bunch of different programs that I would buy here and there, not really knowing which one to fully commit to because they all kind of said different things. Another problem with those programs was figuring out where to actually start.

A big issue I had in the past was that there was just so much information in them. It almost required me to become an expert before I could even figure out what my next step was going to be. Darren’s program is the complete opposite. From the very first weeks, it was so cut-and-dry, so step-by-step, really minimal, and very focused. He just guides you through exactly what you need to do next.

For example: here’s how to use this app, here’s how to count calories, here’s how many calories you should eat per day, here’s how to structure your meals, here’s how to get your grocery shopping list, and here’s how to make meal prep super easy so you’re not spending hours in the kitchen every day.

I found all of this super helpful because, like most people, I’m incredibly busy. I have two kids, a wife, and I run a business. I don’t have time to dive into the literature and try to become a sports scientist. Having somebody who has already gone through all that just guide me on what I need to do—and what I don’t need to do, which is even more important—has made the whole thing simple and straightforward.

It’s been absolutely amazing, and I’ve lost 14.75 kg in the last six months since being on the program.

I’m three months in to my journey with sustainable fitness and it was a great decision to join.
The main benefits for me are the accountability (keeping me on track), the support (to help with any bumps on the road) and the knowledge (learning how to reach my target end goal with the right habits and then how I will stay there once I achieve my goal)
I wasn’t sure when I started whether this would work for me but thanks to Darren and Dan, I’m very happy with my progress!

This is the only program that ever worked for me. They will hold you accountable, but also flexible to work with your specific situation. Highly recommend

Darren and Dan are like big brothers that just want what’s best for you. I can only imagine the check ups, the personalised videos, the planning, the tracking must take over these guys lives and yet they still show up whenever I need them. I’ve lost 15Kg in about 3 months. They teach you that the process really isn’t that much work if you just stay consistent and accountable. They’ve worked around my crazy work schedule and they know what they’re talking about! They’re extremely knowledgeable. I honestly think they’ve saving/saved me from serious health issues down the line. I already no longer feel 20 years older than I actually am!

If you need help with your weight, nutrition or fitness and you work in aviation, these guys are the ones! I’ve only really started my journey with sustainable fitness and I’m genuinely enjoying every minute and the results are showing.

Couldn’t recommend these guys enough. They’ve saved my health already! Give them a go!🤙🏼

Darren and Dan have your back. They want you to succeed and make you fully accountable which is great. They know what they are doing and most importantly for me, as I work in aviation, they have in previous lives been in the same place, frequent travel, living in hotels, airport snd airplane food etc. If you want to change your life, sustainably loose weight and get fit these guys will help you and teach you to achieve that. Do yourself a favor, take the leap, you won’t regret it.

It's not rocket surgery despite all the you tube and cosmopolitan articles. You want to lose weight, get fit stay healthy? Talk to sustainable fitness. Darren and Dan provide a simple direct accountable program which easily fits any lifestyle and the results are quick to be seen. Great coaching and a great support network. Don't ask when is the time. Now it's the time. Get yourself sorted with sustainable fitness.

I joined Sustainable Fitness, led by Darren, in November 2024, and the experience has been nothing short of life-changing. Through their aviation inspired program, I lost 10kg by the end of March 2025. After reaching my weight loss goal, I moved into a bulking and gym phase, I am 10 weeks into a 12 week program, and the support from the team remained exceptional.

One of the standout features of Sustainable Fitness is the emphasis on tracking every aspect of your health journey—including food, water intake, sleep, and daily steps. This level of detail, combined with regular check-ins, gave me the accountability I needed to stay on track and see real progress. Knowing that Darren and Coach Dan were monitoring my progress and providing feedback made a huge difference in keeping me motivated and consistent.

Darren’s professionalism, deep knowledge of fitness, and commitment to his clients really set Sustainable Fitness apart. Coach Dan is dedicated and sound out, always ready to offer advice and keep you right. The programming is effective, sustainable, and tailored to individual needs, making it easy to stay on track and see real results.

Whether you’re looking to lose weight, build muscle, or simply improve your overall health, I highly recommend Sustainable Fitness. Darren and his team are passionate about helping you succeed and will support you every step of the way.

A fitness/health lifestyle that can fit into anyone’s life in a sustainable way. Accuracy and commitment to the process is key, it works and results don’t take long to see. The commitment from Darren and Dan is second to none. Always there to support/advise and keep it fun. Embrace the journey and it’s something that you will have for life. I highly recommend talking to the guys to explore how this could change your lifestyle.

Prior to joining I followed Sustainable Fitness with interest through it’s development noting that it was becoming a catalyst especially for many in aviation to improve their health and wellbeing. I eventually decided to join wishing that I had done it sooner.

I am in my 40’s, a father to a young child, work shift, have a long commute and on my days off help out on my family’s farm.

Being very time poor at present Sustainable Fitness program helped direct me in a flexible and natural way to loose 15kg in around 74 days. This was done by eating the food that I choose to and with no exercise just the steps and activities that come with my typical lifestyle.

Both Darren, Dan and a huge community of people within Sustainable Fitness are always there in the background guiding you in the right direction and available to advise you when the going gets tough.

Remember Your health is your Wealth!

It is with some emotion that I am finishing the program today, two years to the day when it was high time to get myself back on track because my physical abilities and my physical health no longer allowed me to take on and fully enjoy many activities with my family and alone. I had tried a few years before getting myself back on track, going to a gym that supposedly offered nutritional and physical monitoring, I was very quickly disappointed. When I was in contact with Darren I was immediately interested and motivated to join the program because it was obvious that I had a lot to learn and that above all he was going to provide me with methods that would change my lifestyle habits gently and above all without any rush. To date the initial objectives have been largely exceeded and my daily life has never been better and the most important thing in all this is that good habits are now part of my daily life, a positive and enriching routine.

I can never thank Darren enough who was able to provide me with all the useful and necessary help for my success and all this remotely, which shows that what matters is the method of the program and especially the reliable of its trainer, from the moment we decide to take ourselves seriously and stick to the program the results will follow.

Good luck Darren

After working with Darren for the past 15 months, it is not just a basic fitness program you are getting from a very knowledgeable coach. You find yourself getting fully involved in a new lifestyle - from understanding how to go to the gym and eat accordingly, to taking on a fully new approach to life and everyday tasks.
I cant recommend Sustainable fitness enough.

After having tried......and failed many diet programs in the past, Sustainable Fitness is the one that worked for me. When I say it worked, well, that's an understatement. It has transformed me in more ways than one because of the approach they take with you, the coaching & mentoring from the main man himself, Darren. It's second to none. It's personal and tailored to your needs & requirements. It's opens your mind up to a different approach to managing and maintaining your weight and in turn, your overall health for hopefully the rest of your life! There will be ups & downs, but that's normal. Darren & his team will be there to push you and hold you accountable when the time comes too & that is a fantastic approach. It's a superb program and I would urge anyone thinking about not just weight loss, but overall health & wellbeing to join Sustainable Fitness. Highly recommended and a huge thanks to Darren and team for a great job. I'm already down 6.5 Kilos in the last few months & that's by doing nothing drastic at diet wise. Try it out!

Darren is an absolute genius! I joined sustainable fitness just before Halloween and before I knew it it was Christmas time and I was down nearly 6kg without stepping foot into a gym! The way Darren explains everything and has a solution for absolutely anything you might be stuck with is just amazing. Darren will show you how to look after yourself while still eating food you enjoy and not starving yourself. As most people in the group say, I wish I had joined earlier!

I am just in my fifties and over the years my weight gradually crept up. My confidence and energy was sunk, I was conscious of my weight, I was avoiding things, people and social events. My work has me travelling and eating out allot, which does involve alchohol of course. At home, I thought I was eating well, three meals a day etc. But it was the in between, the extra sandwich, the tube of Pringles, the sneaky pint. Darren provided the education and the tools so I could discipline my self into managing and controlling my diet, exercise and weight. This is the paradigm shift, you are controlling things, and with consistent application, the results are there on a table you fill in each day. I started just a little under two months ago, I first measured my weight at 92.0kg and today, eight weeks later, measured 82.8, almost 10kg down, and I had a new normal Christmas, whiskey with my dad, turkey and ham etc. You can have the things you like and enjoy, you just measure and record and stay within parameters. New energy, new confidence, fresh motivation and outlook on what the future holds. I don’t think I exaggerate when I say I’ve “bought” some life time back by investing in myself like this. Thanks Darren.

Experience so far has been unbelievable.
Very proud thorough onboarding process.
Clear guidelines and communication.
Darren is very encouraging and open with details, while also holding us accountable.

Highly recommended

Before joining sustainable fitness, I had gained over 10kg + over time . I’m in my 50’s and have a few health niggles that flare up occasionally that may slow me down a bit from time to time so I was finding it quite hard to lose weight. However I’m close to 7kg down in a few short months and really starting to feel the difference. It hasn't been hard and it feels sustainable. The biggest learning for me at this stage has been CONSISTENCY!!
I thought I was fairly consistent but how wrong I was ! Working with Darren has helped me introduce firm positive habits into my daily life and I’m now starting to reap the rewards . I feel good, I notice my shape is changing, I’m more comfortable in my own skin and I’m only getting going 😊 I feel like I’m more positive generally and my menopause aches are definitely reduced . Thanks Darren for being in my corner.. I am a firm believer in getting someone who has done this before you to help guide you through but just wanted you to know to know I’m so glad I chose Darren . He really cares and it shows - you wont regret choosing sustainable fitness !

I've been with Darren and Sustainable Fitness just under three months now and to say I'm shocked at my achievements is an understatement (over 5kg down).
I was introduced to Darren through my husband who has had and having amazing results. I was very hesitant at the start and had a few worries that I believed would make me fail but Darren has been through it all and knew exactly how help me overcome my worries.
For a mother on maternity leave with my busy 8 month old and my "never rest" almost three year old - both with me full time, it's rare I get a second to myself. Not to mention, trying to stage a house, put it on the market/ sell and move country all thrown into the mix. Darren looked at my current busy lifestyle and made the perfect solution to help me reach my weight goals. The support and encouragement is ongoing and no question, query or concern ever goes unanswered.
My only regret is not starting sooner.

Joining Sustainable Fitness is probably the best decision i have ever made in my life, I struggled for a long time with weight and tried so many different fads and diets and nothing worked for me I would give up after a month or two. With sustainable fitness things were very different and Darren makes this program suit you, your career and lifestyle and it works amazingly. I have been on the program almost 3 months and I have lost 11kgs with ease and I didn’t even see the inside of a gym (yet) but it will be part of my program in the future. I would recommend this program to anyone who has anxiety in regard to taking the necessary steps to weight loss and fitness, Darren is an amazing coach and is always there when you need him, I cannot commend him enough for the effort he puts in with each and every client but his results speak for itself. The community he has built is amazing and it’s great the support we all give each other to keep pushing.
This is an amazing program and I look forward to being part of it for a very long time.

Working with Darren at Substantial Fitness has been a pleasure. Darren is not only knowledgeable in his field but also dedicated to providing top-notch advice and support. I cannot recommend Substantial Fitness enough if you have a weight goal that your trying to get to and your struggling for one reason or another, Darren will get you there.