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About Us
We Are MJ Fitness
A fitness lifestyle company based in Adelaide, South Australia, dedicated to helping & inspiring all people to improve their lives through health & fitness by providing products, information & experiences.
We offer a wide range of fitness & health supplements from the World's best brands at the guaranteed best prices in the country. From protein powders and pre-workouts to amino acids, vitamins, creatine, superfoods and fat burners, we have all of the supplements you need to support your health & fitness goals.
In addition to our extensive supplement range, we pride ourselves on our excellent customer service and fast delivery times with express shipping available on all orders across Australia and free shipping available on orders over $150.
We also offer a free sample with every order, a free loyalty program that enables you to earn discounts on future orders, a number of different buy now, pay later options, and a price beat guarantee.
Whether you're just starting out on your health & fitness journey or you're an experienced athlete, we welcome you into the MJ Fitness community.
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Our Newest Supplement Articles

Unlock Your Energy Potential: Why NAD+ is the Supplement You Need
Energy, Itâs the backbone behind everything fitness. Workouts, recovery and even just normal bodily functions need energy. Whatâs the energy source behind all this? NAD+, short for nicotinamide adenine dinucleotide, doesnât have the flashiest or even most well known name in the industry, but donât let that fool you. NAD+ plays a massive role in how your cells produce energy, recover and even age. Whether youâre an athlete, or just want to age more gracefully, NAD+ is the supplement worth knowing about. What is NAD+? NAD+ is a coenzyme found in every cell that resides in your body. Its job is to help your mitochondria create ATP, so your cells have usable energy. NAD+ is also a big player in your bodyâs metabolic function, cellular repair and even DNA health. As we get older, NAD+ levels decline, leaving people with slower recovery, reduced energy, brain fog and tired skin. This is why supplementing with NAD+ has become a trend for those who want to wind back the clock a bit. The best part? Itâs backed by science. NAD+ Precursors: What to Look For Now for the bad news. NAD+, when taken as a direct supplement, doesnât absorb well into your body. Donât let that put you off, thereâs a work around, precursors. Precursors are compounds that, when taken, convert into NAD+ inside your body. The main one that youâll see on the market in NMN (Nicotinamide mononucleotide). If youâre looking for NAD+, NMN is highly bioavailable and will raise your NAD+ levels no worries. Benefits of NAD+ & NMN Supplementation So Iâve got your attention when it comes to NAD+. Want to hear the benefits too? Here are the highlights More Energy: Within a few weeks of consistent use, users noticed that they feel more energised and less tired. Faster Recovery: With the reduced inflammation and improved cellular repair, post- training recovery becomes a breeze. Anti-Ageing Effects: Itâs no fountain of youth, however NAD+ has been shown to help you age more gracefully by protecting cells from oxidative stress and DNA damage. Mental Clarity: Brain function, memory recall and reducing mental fatigue all gets a nice bump from higher NAD+ levels. How to Increase Your NAD+ If youâre looking to raise your NAD+ levels, take NMN daily, like a multivitamin or creatine. Start with a 500mg daily dose and see how you feel after 1-2 weeks. From there you can work your way up to 1000mg, which is the maximum dosage. Taking too much NMN, or too much NAD+, can cause side effects like nausea, headaches, skin issues and liver strain. Starting at the bottom end of the recommended doses, and adjusting as you go will make sure youâre safe. Conclusion Increasing your NAD+ levels through NMN may not be the first thing you look at when choosing your supplements, but it is definitely one of the most important ones that you can add. Supporting energy and the cellular level, improving recovery, and having multiple long term benefits, a NAD+ precursor supplement is worth adding into your daily stack. Â
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Are You Overtraining⌠or Just Under-Recovering?
If youâre diving into the rabbit hole of training, youâve probably heard of the term âovertrainingâ. People claim that if you hit the gym too hard, donât recover between sessions and maybe even go backwards, thatâs overtraining. But, is it overtraining? Not likely The truth is, overtraining isnât as common as youâd think. Under-recovery, however, is more common. If you donât fix it, it doesnât matter how perfect your program is, you wonât grow, hit that 1 rep max, and youâll burn yourself out. What Is Overtraining and Under-Recovering? To clarify this: Overtraining mostly affects elite athletes or lifters with high training loads and not enough rest. It has physical and mental effects and can take months to recover from. Under-recovery is much more relatable. Itâs when youâre smashing weights 7 days a week, sleeping 5 hours a night and not tracking nutrition at all. So, odds are you probably arenât âovertraining.â But you might be under-recovering. Why âOvertrainingâ Isnât a Thing for Most People Youâll hear the term get thrown around way too casually, but at the end of the day most people who think theyâre overtraining are just not eating enough or sleeping enough to recover from their sessions. This puts you in a loop where you feel fatigued, sore and unmotivated. If that sounds all too real, overtraining isnât the issue. Under-Recovery Might Be the Real Culprit Gains arenât made in the gym, theyâre made in the time spent recovering from your gym workout. Training is a stress on your body. Yes, stress is essential for growth, but it only works if you recover from it. If youâre not sleeping enough, eating enough, or training smart enough, the stress will snowball. After a while, your progress will stall and you may even go backwards. Thatâs under-recovery. Signs Youâre Not Recovering Properly If youâre smashing the gym consistently but not seeing results, look out for these symptoms of under-recovery: Being sore for days on end Low motivation and fatigue Feeling exhausted but not sleeping Strength and performance hitting a wall Irritable and feeling âoffâ Losing your appetite Injuries that just wonât go away If a few of these sound all too real, itâs time to rethink your approach to training. How to Adjust Your Training for Better Recovery You can train hard, but if you feel like youâre in the bin most days, itâs time to train smarter. Hereâs some adjustments you can make: 1. Track Your Intensity (RIR/RPE) If youâre slamming every set to failure, try backing off and leaving 1-3 reps in the tank. Save those all out failure sets for certain exercises. Using the RPE (Rate of Perceived Exertion) or RIR (Reps in Reserve) is a good way to track this. 2. Deload Every 4â8 Weeks If youâre going high volume for your training, having a deload week, where you reduce volume or intensity, can work wonders for your recovery. 3. Prioritise Sleep Up to 70% of your recovery happens during sleep, making it one of the most important things for recovery. Aiming for 7-9 hours per night is the sweet spot. 4. Eat to Support Recovery If youâre in a caloric deficit, your recovery will take a hit, thereâs no way around it. Making sure youâre eating enough protein, and recovery will be the best it can. 5. Take Rest Days Seriously Itâs not lazy to have a rest day, itâs a part of the program and a part of recovery. Having at least 1-2 rest days can make sure your body recovers. 6. Manage Life Stress Life is stressful. Everything from work to screen time can affect how you recover. A hard week at work + slamming weights at the gym all week = your body needing more to recover. You Donât Need to Push Through Everything Youâve heard the âno days offâ mindset, itâs easy to fall into. If youâre looking to progress long term, itâs a balancing act of intensity and recovery. Your training should challenge you, not cripple you. Once you fix the under-recovery, youâll start to feel stronger and ready to push where it counts. Track More Than Just the Weight on the Bar If youâre feeling tired and stuck, it doesn't necessarily mean youâre overtraining, it usually means youâre under-recovering. Most lifters plateau from not supporting their recovery, rather than training too much. Recovery is the way that makes progress possible.
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Zombie Labs Gainz Review: Can This Mass Gainer Really Deliver Big Results?
Overview Looking to bulk up, pack on serious size, or finally stay ahead of your calorie demands? Zombie Labs may be best known for their wild branding, but their new high calorie gainer Gainz is anything but gimmicky. With over 670 calories per serve, 35 grams of high quality protein, and a stacked ingredient panel including creatine, BCAAs, and digestive enzymes, itâs built to do one thing: help you grow. But how does it actually stack up against the big names in the mass gainer game? Letâs break it down. Formula Breakdown Zombie Labs Gainz is designed to provide a complete, all in one solution for individuals seeking to increase size, strength, and daily calorie intake. Each full serve delivers approximately 673 calories, with a macronutrient breakdown that supports both muscle growth and recovery: Protein: 35 g Carbohydrates: 100.3 g (including 19 g of sugars) Fats: 14.7 g (13.1 g saturated fat) Creatine Monohydrate: 3000 mg BCAAs (L-Leucine, L-Isoleucine, L-Valine): 3000 mg combined Digestive Enzymes (DigeZymeÂŽ): 50 mg Protein Matrix Gainz features a multi-source protein blend consisting of: Whey Protein Concentrate (WPC) Whey Protein Isolate (WPI) Hydrolysed Collagen Peptides Egg White Protein Pea Protein (PhytoPeaâ˘) This diverse matrix provides a broad spectrum of amino acids, supporting muscle protein synthesis, recovery, and satiety. The inclusion of fast digesting whey, medium digesting egg white, and slower digesting plant proteins allows for a sustained release of amino acids, ideal for post-workout nutrition or as a high protein meal replacement. Carbohydrate Matrix The carbohydrate component includes: Maltodextrin Ground Oats Sweet Potato Powder These ingredients provide over 100 grams of carbohydrates per serve, delivering both fast acting and slower burning energy sources. The use of complex carbs such as oats and sweet potato helps stabilise blood sugar levels and reduce the insulin spikes commonly associated with maltodextrin heavy gainers. This combination is particularly beneficial for fuelling intense training sessions and supporting a consistent calorie surplus required for bulking. Fat Matrix To enhance caloric density and support hormonal function, Gainz incorporates: Medium-Chain Triglycerides (MCTs) Coconut Oil Olive Oil Powder The total fat content of 14.7 grams per serve includes 13.1 grams of saturated fats, primarily from MCTs and coconut oil. While this contributes to the formulaâs high energy yield and can aid in recovery, the saturated fat level may be a consideration for users monitoring cardiovascular health. Creatine and Amino Acid Support Gainz includes 3000 mg of Creatine Monohydrate, a proven ingredient to support strength, muscular endurance, and power output. While beneficial, this is slightly below the clinical dose of 5000 mg per day commonly recommended for optimal performance outcomes. Additionally, 3000 mg of Branched Chain Amino Acids (BCAAs) are included to assist muscle recovery, reduce muscle breakdown, and stimulate protein synthesis. These are valuable additions in the context of a high calorie post training or meal replacement shake. Digestive Enzyme Blend To support digestion and nutrient absorption, the formula features 50 mg of DigeZymeÂŽ, a multi-enzyme complex containing: Amylase Protease Lactase Lipase Cellulase These enzymes assist in the breakdown of carbohydrates, proteins, fats, and lactose, helping reduce bloating and improving overall tolerance, especially important when consuming large volume, high calorie shakes. Flavour Breakdown Zombie Labs Gainz comes in two rich and creamy flavours: Vicious Vanilla Chaotic Chocolate Both deliver a milkshake style texture, especially when mixed with milk. The texture is thick but smooth, ideal for those who enjoy a full bodied shake. Taste guarantee included, if you donât love it, Zombie Labs offers a money-back return. Price Breakdown Gainz is available in two sizes: 10-Serve Tub â $79.00 AUD (~$7.90 per serve) 27-Serve Tub â $159.00 AUD (~$2.93 per serve) For a premium mass gainer with added creatine, BCAAs, and enzymes, the 27 serve option delivers excellent value, especially when used daily during a bulking phase. Supp Comparison Compared to other high quality mass gainers: Rule 1 Mass Gainer offers more calories per serve but comes in at $5+ per serve. Rule 1 Clean Gainer delivers similar macros but is priced around $3.80 per serve. Gainz balances protein variety, carb quality, and added support ingredients at a competitive $2.93 per serve. It doesnât max out every single ingredient, but its broad spectrum formula makes it one of the better balanced options for both beginners and advanced athletes. Who Is It Best For? Zombie Labs Gainz is best suited for: Gym goers in a bulking phase Hard gainers who struggle to get enough calories Athletes with high training volume Anyone looking for a convenient all in one mass gaining shake Final Thoughts Zombie Labs Gainz is a bold and well executed entry into the mass gainer category. With its 673 calories, 35âŻg of quality protein, 100+âŻg of carbs, and supportive extras like creatine, BCAAs, and DigeZymeÂŽ, itâs a complete muscle building solution. While slightly underdosed in creatine and BCAAs compared to standalone options, the value, taste, and convenience make it a standout choice, especially in the 27 serve tub. Whether youâre chasing size, strength, or just looking to hit calorie targets more efficiently, Gainz delivers the goods.
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Primabolics Complete Collagen Protein Water Review: The All In One Protein Water!
In the ever growing world of collagen supplements, Primabolics has stepped up with a product that does more than just deliver collagen. Complete Collagen Protein Water + Hydration blends high quality hydrolysed collagen peptides with electrolytes and supportive ingredients to enhance performance, recovery, and hydration. So how does it stack up? Letâs break it down. Formula Breakdown Collagen supplements arenât just about the protein content, itâs whatâs added around it that makes a difference. Primabolics delivers a well rounded formula designed to boost bioavailability, support tissue health, and aid recovery. Each 25g scoop includes: PeptinexÂŽ Hydrolysed Bovine Collagen Peptides (22.1g)A rapidly absorbed collagen source that supports healthy skin, nails, hair, joints, and bones. LâTryptophan (100mg)A key amino acid missing from standard collagen, included here to complete the amino acid profile and aid in muscle recovery. Vitamin C (80mg)Crucial for collagen synthesis and stability, helping your body utilise the protein effectively. Electrolyte Matrix (600mg)Enhances hydration and muscle function.Includes: Sodium Chloride (200mg) Potassium Citrate (150mg) Calcium Citrate (150mg) Magnesium Citrate (100mg) AstraGinÂŽ (50mg)A patented ingredient that improves nutrient absorption. Irish Sea Moss (50mg)A natural source of vitamins and minerals that supports gut health. With a full amino acid profile similar to whey protein, plus added hydration and absorption support, Primabolics Complete Collagen Protein Water + Hydration stands out from traditional collagen powders. Overall Rating and Summary Rating: 9/10 Primabolics Complete Collagen ticks all the boxes: joint, tissue and gut support, hydration, and protein intake, without added fats, sugars, or artificial sweeteners. Itâs a lean, effective, all in one collagen formula. Flavour Range & Taste Available in 7 refreshing flavours: Peach Raspberry Apple Juice Paradise Fruits Vanilla Chocolate Unflavoured Whether you like classic chocolate, a fruity refresher, or something neutral to mix with other supplements, thereâs an option here for you. All flavours are naturally sweetened with stevia, no artificial sweeteners included. Price and Value for Money & Supplement Comparison 15 Serves â $49 ($3.27 per serve) 30 Serves â $79 ($2.63 per serve) This puts it in line with other premium collagen protein waters like Zombie Labs Protein Water and Nexus Super Protein Collagen +. What sets Primabolics apart is the added hydration and gut health support offering more value in a single scoop. Who Is It For? This product is ideal for: Anyone avoiding dairy-based proteins Anyone wanting a light, refreshing post workout shake People looking for a recovery boosting alternative to plain water on hot days Final Thoughts Primabolics Complete Collagen Protein Water goes beyond standard collagen. With added electrolytes, gut support, and absorption enhancers, all in a clean, sugar free, and dairy free formula; itâs a versatile daily supplement for anyone looking to recover better, stay hydrated, and feel their best. Â
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