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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 $100.
Our commitment to service excellence extends with same business day dispatch for orders placed before 3pm, ensuring that you receive your supplements as quickly as possible.
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

Creatine and Dementia: Could This Simple Supplement Protect Your Brain?
Creatine has long been a staple for gym goers, but recent studies suggest it might do more than help you lift heavier or push through extra reps. Research is uncovering its potential to slow the progression of neurodegenerative diseases like Alzheimerโs and Parkinsonโs, making it a surprising player in brain health. What Is Creatine? Creatine is a naturally occurring compound stored in your muscles and brain. Discovered in 1832, it gained popularity after the 1992 Olympics, when athletes credited it with boosting their performance. Its primary role is to store and replenish energy, helping your body handle intense activity. While creatine doesnโt directly build muscle, it allows you to train harder, paving the way for better results. Today, creatineโs popularity has soared thanks to viral trends on social media platforms like TikTok and Instagram. But its benefits go far beyond the gym, including antioxidant properties and the ability to protect brain cells. Huntingtonโs Disease Huntingtonโs is a genetic disorder with no cure, and most patients only live about 20 years after diagnosis. Research has shown that creatine might help reduce brain deterioration in people with Huntingtonโs and even extend their lifespan. While these findings are promising, more studies are needed to confirm its effectiveness. Parkinsonโs Disease Parkinsonโs is another neurodegenerative condition that currently has no cure. Early research suggested that creatine might protect brain cells and slow the progression of Parkinsonโs, but larger trials did not find significant benefits. Although the results have been mixed, scientists continue to study creatine as a potential therapy. Alzheimerโs Disease Alzheimerโs is one of the most common forms of dementia, but its early stages are difficult to diagnose. Research has revealed that people with Alzheimerโs tend to have lower natural creatine levels in their brains. Supplementing with creatine could help slow the progression of the disease, although the exact mechanisms remain unclear. ALS (Lou Gehrigโs Disease) ALS is a condition that gradually robs patients of muscle control by damaging motor neurons. Animal studies have shown that creatine improved motor function and survival rates in models with ALS-related genes. However, human trials have had mixed results, and more research is needed to determine if creatine could benefit those with ALS. Stroke Prevention Studies suggest that creatine could help prevent strokes by supporting brain energy metabolism. It might also assist in recovery by reducing damage to brain cells. While the evidence is still emerging, this adds to creatineโs potential role in maintaining brain health. Memory Loss Creatine has also been shown to improve working memory, which is the ability to create and retain new memories. This is especially helpful for older adults and people on plant-based diets, who tend to have lower creatine levels. How Does Creatine Work? Creatineโs ability to cross the blood-brain barrier is key to its impact on brain health. Once in the central nervous system, it helps produce and store energy while protecting cells from oxidative stress. These effects may explain its potential to slow the progression of neurodegenerative diseases. Beyond brain health, creatine is being studied for other uses, including reducing chronic pain, supporting heart function, and even lowering the risk of preterm labor. Why Creatine Deserves Your Attention Creatineโs reputation as a workout supplement is well-earned, but its broader health benefits make it worth considering for everyone, not just gym goers. Itโs easy to add to your routine, whether you mix it into a shake or take it with water before or after a workout.
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The Gut: Your Second Brain!
The gut is often referred to as the "second brain" and for good reason. Emerging research has shown that the state of your gut health can greatly influence your mood, physical health, and cognitive ability. From digestion to emotional regulation, the gut-brain connection is vital to understanding overall wellbeing, and supporting a healthy lifestyle that comes from the things we put in our bodies. Happy Gut, Happy Life The gut is home to trillions of microbes. Bacteria, fungi, and other microorganisms that play a significant role in processing food, maintaining immune function, and regulating neurotransmitters, all call our stomach home. Among these microbes, bacteria are especially important, as they produce chemicals that directly affect the brain. One such chemical is serotonin. While the brain produces some of the bodyโs serotonin, about 90% of it is actually created in the gut. When the gut microbiome is balanced, it can support the production of these mood-regulating hormones. However, an imbalance in gut bacteria, such as an overgrowth of harmful bacteria or a lack of beneficial ones, can disrupt serotonin production, leading to mood disorders like anxiety and depression. Studies have shown that people with a healthy, diverse gut microbiome are less likely to experience mood disturbances than those with an imbalance in the gut flora. Chronic inflammation in the gut can also negatively impact the central nervous system, triggering feelings of irritability, anxiety, and fatigue. In some cases, gut health issues such as leaky gut syndrome, where the intestinal lining becomes damaged, can allow harmful substances to enter the bloodstream, triggering system wide inflammation and affecting mental health. The Gut-Brain Axis: How does the Gut Affect my Performance? Beyond mood and hormonal regulation, gut health plays a central role in overall physical and cognitive health. The gut is essential for the digestion and absorption of nutrients, which in turn fuel the bodyโs cells, tissues, and organs. A well-functioning gut helps break down food, absorb essential vitamins and minerals, and prevents harmful pathogens from entering the body. Your gut also has a direct impact on cognitive performance.ย The gut-brain axis, a communication pathway between the gut and brain, enables them to send signals to each other. This means that the state of your gut can influence how well your brain functions, affecting concentration, memory, and decision making. A healthy gut microbiome has been linked to better cognitive function and a reduced risk of cognitive decline. Studies have found that individuals with a disrupted gut microbiome are more likely to experience problems with memory and learning. On the other hand, maintaining a balanced gut can enhance focus and mental clarity, making it easier to perform well in work, school, or athletic activities. Final Thoughts The connection between gut health, mood, and performance is very important and essential in understanding how to maintain a healthy gut. By maintaining a healthy, balanced gut microbiome through proper nutrition, stress management, and probiotics, people can enhance not only their physical health but also their mental and cognitive wellbeing. The key is to nurture the gut, as its health plays an integral role in how we feel, perform, and thrive in everyday life.
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The Best Supplements For Hyrox
Hyrox. The gruelling combination of endurance and strength. Challenging every muscle in your body. Sounds fun, I know. As you smash out a mix of functional exercises and a series of running, youโll need some supplements to keep yourself on your feet. Here are our top picks of supplements to keep you at your best and annihilate those workouts. Protein Powder You really canโt have a list like this without a good protein powder. Protein is crucial for muscle rebuilding and repair after these intense workouts. Getting in a high quality protein source, like whey, can speed up growth and recovery, letting you come back stronger and faster after each workout. Creatine Monohydrate Hyrox is full of high-intensity, explosive movements that require short bursts of energy. So, creatine is perfect for this. By boosting your bodyโs ability to produce ATP, the fuel for muscle contractions, youโll be able to go all in on those intense, maximum effort sessions. Electrolytes Another crucial component of Hyrox is hydration. With the intense exercise and sweating, youโre depleting your essential electrolytes. Replenishing your magnesium, sodium and potassium can keep your muscles functioning properly, and stop cramping, keeping you at 100% from start to finish. Carbohydrate Fuel When it comes to Hyrox, youโll need endurance. Giving yourself a sustained boost of energy with carbohydrates can provide your body with the power to get through the events. Fast digesting carbs can keep you performing and ward off the energy slump mid circuit Pre-Workout Thereโs a demand on physical and mental stamina during a Hyrox session. A good pre-workout can give you the focus, energy and drive to tackle each event. With the right pre-workout, youโll be able to push through the fatigue of those gruelling sessions and keep up the intensity. BCAAs Branched-chain amino acids (BCAAs) are the go to for recovery during the long and intense workouts. Preventing muscle breakdown, BCAAS make sure your body maintains muscle mass while you send it on each Hyrox Challenge. They also have the added benefit of being ideal for hydration too. Final Thoughts When it comes to your Hyrox training, supplements are a valuable tool. Whether itโs maintaining energy with carbs, boosting recovery with BCAAs and protein powder, or the energy hit of a pre-workout, each supplement has a purpose that can assist your personal needs.
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Stay Strong, Stay Safe: Injury Causes, Prevention and Management
Injuries are one of the biggest fears of anyone who enjoys the gym. Having to take two or more weeks off is enough to make any lifter go insane, but there is a silver lining. You donโt have to let that sprained ankle or hurt shoulder keep you out of the gym. Common Causes Of Injury The most common cause of injury in the gym boils down to poor form. Using poor technique and ego lifting leads to strains and sprains. If you donโt like rest days, Iโve got some bad news for you. Overtraining by skipping rest days and ignoring signs to rest and recover can cause overuse injuries like tendinitis. Skipping warm-ups also can put you at risk for an injury. Prevention Strategies Donโt let the fear of an injury scare you, injuries can be prevented with a few tweaks to your programming.ย Did You Hear That? Listening to your body is the most crucial part of any fitness journey. If you feel like youโre too sore to train, donโt. Planning deload weeks and making sure youโre recovering properly are fundamental to any type of gains. Form Over Weight: If you prioritise form over heavy weight, youโll be on the way to making some killer gains. Working with a coach or recording your sets can be a way to make sure your form is spot on.ย Release The Tension: Before you train, using some dynamic and static stretches will help with flexibility and reducing tightness. Foam rolling and Massage guns can also help your muscles release the tension Balanced Body: If you find one side of your body is stronger than the other, do single-sided, or unilateral, exercises. Make sure you do the weaker side first and match the reps with the stronger side so that they can even out. Gear Up: If you find some of your joints seem a bit weaker, adding in accessories like knee/elbow sleeves, wrist wraps and lifting belts can help stabilize your joints to keep them compressed and warm during those heavier lifts. Managing Injuries Injuries are still going to happen, even if you feel like you did everything right, but that shouldnโt stress you. If you feel a sharp pain or discomfort during a movement, stop immediately, stopping as soon as youโre injured can keep it from getting too serious. Once youโve stopped, assess the situation and check to see if you can move the joint and if there is any bruising or swelling. Make sure that if you are injured, you use the RICE method; Rest, Ice, Compression, and elevation, to reduce the swelling and pain for any sprains or strains. If you find the injury persists or it is more severe, go to a health professional. They will give you guidance on your next step, whether that is physical therapy or any other type of recovery method, so youโre able to recover safely.ย Itโs also important to stay active whilst you're injured so you donโt lose all your progress. Doing upper days if youโve hurt your leg, or the opposite, can help promote blood flow and healing. Bounce Back Injuries donโt have to be the end of a journey, theyโre only a part of it! By using the right strategies to prevent them, training smart and listening to your body, you can keep the injuries away and keep on progressing. Donโt let a setback keep you down and use it to bounce back stronger and more resilient than ever.
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