
Free shipping with all orders over $100!
Found a cheaper advertised price for an identical product? We'll beat it by $1 no exceptions!
Receive a free sample with every order!
Sale
Sale
Sale
Free Delivery
Get it delivered free to your door when you spend over $100
Loyalty Points
Earn loyalty points with every order
Price Beat Guarantee
Buy with confidence at the best price

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.
What Our Community Is Talking About
Our Newest Supplement Articles

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, you’ll 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 can’t 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 body’s ability to produce ATP, the fuel for muscle contractions, you’ll 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, you’re 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, you’ll 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 There’s 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, you’ll 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 it’s 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.
Read more

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 don’t 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 don’t like rest days, I’ve 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 Don’t let the fear of an injury scare you, injuries can be prevented with a few tweaks to your programming. Did You Hear That? Listening to your body is the most crucial part of any fitness journey. If you feel like you’re too sore to train, don’t. Planning deload weeks and making sure you’re recovering properly are fundamental to any type of gains. Form Over Weight: If you prioritise form over heavy weight, you’ll 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. 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 shouldn’t stress you. If you feel a sharp pain or discomfort during a movement, stop immediately, stopping as soon as you’re injured can keep it from getting too serious. Once you’ve 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 you’re able to recover safely. It’s also important to stay active whilst you're injured so you don’t lose all your progress. Doing upper days if you’ve hurt your leg, or the opposite, can help promote blood flow and healing. Bounce Back Injuries don’t have to be the end of a journey, they’re 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. Don’t let a setback keep you down and use it to bounce back stronger and more resilient than ever.
Read more

Whey Protein: Why Is It Getting More Expensive
Whey protein has arguably been one of the most popular supplements in the fitness space since the dawn of fitness supplementation. With its high bioavailability, versatility, and exceptional value when compared to other sources of protein, it’s no wonder why whey has been so loved for so long. However, if you’ve recently gone to buy a tub of whey protein, you’ve probably noticed how the price seems to keep going up and up. It’s not a bad dream and you’re not imagining it. So what’s making the price of whey skyrocket? Let’s take a deep dive and find out. The Context Behind the Price Rise Products containing Whey Protein Isolate (WPI) and Whey Protein Concentrate (WPC) have seen dramatic increases in price post-COVID. A 25-30 serve tub of a quality Whey Protein Blend from a reputable brand was around $49.95 in 2021 - hard to believe, right?! Now that same tub retails for $74.95 or more… That's a 50% increase in just 4 years with no signs of slowing down! Why The Price Of Whey Protein Keeps Going Up If you’ve gone to buy your favourite whey protein and noticed it’s more expensive than usual, you’re not alone. Everyone from an average gym goer, hardcore bodybuilder, and even an everyday consumer is being affected by the ever rising cost of such an essential supplement. But why is whey becoming so expensive? The fact of the matter is, there’s no one answer. From global supply disruptions, rising dairy prices, increased demand and economic factors, they all play a part. 1. Increased Demand for Protein Supplements The demand for whey protein has increased over the past decade with the rise of more and more people adopting health-conscious lifestyles, prioritising fitness, and increasing their protein intake. Even those who aren’t an avid gym goer have been turning to whey protein for meal replacements and weight management. More and more consumers are looking to whey protein, leaving companies struggling to keep up with demand, making prices go up. 2. Global Supply Chain Disruptions We all remember COVID-19… the pandemic that seriously disrupted global supply chains. Unfortunately, whey was no exception. In between all the lockdowns, factory shutdowns and transportation delays, there were massive bottlenecks in production and distribution. Once economies re-opened, there were still adverse effects. The cost of shipping, labor shortages, slowed manufacturing and a whole host of other issues persisted. With most industries experiencing these issues, it resulted in inflation across multiple consumer products, including whey protein supplements. 3. Rising Dairy Prices When cheese is made from cow's milk, one of the byproducts is whey protein. With the cost of feed, labour shortages and ever rising energy costs, the dairy industry has faced increased production costs. Farmers have to spend more on grain to feed their cows, which impacts the cost of milk production directly. Cheese and whey production costs go up from the cost of milk. Then supplement manufacturers are forced to pass on these higher costs. 4. Inflation and Currency Fluctuations With inflation hitting economies worldwide, this affects everything from the food you eat, to the raw materials involved in making it. The cost of whey protein, often being imported from the U.S., Europe and New Zealand, gets hit by currency fluctuations. If the local currency weakens against the U.S. dollar, costs like importation get affected. On top of that, transportation, packaging and operations all have a cost that increases with general inflation. These all contribute to the final price that you have to pay for your whey. 5. Limited Production Capacity Whey protein depends on dairy farming. The dairy industry has strict regulations, and relies on consistent production. This limits the expansion of whey protein production, despite the demand. With the dangers of seasonal fluctuation, climate change, and livestock health, as well as a limited production capacity, small disruptions in the supply chain can have a big impact on the price of whey. Why Transparency Matters Rising costs of whey means that some brands cut corners to keep prices low. Protein spiking, which is adding amino acids or other supplements to make it seem like the protein powder has more protein per serve is an issue in the supplement space. Due to the lack of regulations, it’s easy for unscrupulous companies to use these practices, leaving you at risk of buying a lower quality protein powder. To make sure you’re getting the most out of your whey protein, look for the brands that invest in third party testing and are open with their results. Transparency and quality tend to come with a higher price tag, but they guarantee what they advertise is what they deliver. Protein is a commodity with a standard base price so be weary of deals that seem too good to be true. The Road Ahead With demand rapidly outpacing supply, and no immediate solutions on the horizon, the whey protein market isn’t going to stabilise anytime soon. While this means that prices are going to keep going up, it brings the importance of supporting ethical brands that prioritise quality to the forefront. In the next few months & years there will be a push towards protein blends that combine not only whey protein but other sources of protein such as collagen & egg protein. This will help to keep protein powders at a respectable price for the consumer. Keep an eye out for the brands that have the highest standards… integrity is as valuable as the whey protein itself.
Read more

Detoxes: Biggest B.S in the Fitness Industry
If you’ve ever been in the fitness industry, tried to lose weight or just been scrolling through social media, you’ve heard the word “Detox’. Herbal teas, juice cleanses, supplements and even some weird looking foot pads claim to help you rid your body of toxins, revive your liver, and make you feel 110%. The truth is detoxes are nothing more than a marketing gimmick, preying on insecurities, and science can back this up. Your Body Is Already A Detox Machine Let’s start off by getting one thing straight: Your body is already detoxing your body 24/7. Your liver, lungs, kidneys and even skin are working constantly to filter harmful substances and eliminate waste in your body. Unless you have a medical condition, they don’t need any help. No juice, tea, powder or weird foot pad can make your liver work any faster or any better. The extreme detox protocols can even put more stress on these organs rather than help. Well, What Are “Toxins” Anyway? You’ve probably asked that question and gotten a vague answer. That’s because these claims are intentionally vague. These “toxins” can range from pollution in your environment, to alcohol, to processed sugar. Too much of these can be harmful, sure, but there’s no evidence that fasting drinking nothing but celery juice will magically cure you from any of these “toxins". It’s been shown that these detoxes can actually cause more harm than good. Severely restricting calories and nutrients can lead to more issues like fatigue and even muscle loss. Just what these detoxes claim to “cure” funnily enough. Detox = Burn Fat Fast? If you ask anyone that’s trying a detox why they’re doing it, they’ll say it’s to lose weight fast. Sure, you’ll drop a kilo or two during a cleanse, but that’ll just be water weight and depleting glycogen from your muscles, not fat loss. As soon as you go back to the food that you were eating before, you’ll put it all back on. Even worse, if you take detoxing to the extreme, you can even slow your metabolism, making it harder for weight loss in the future. “Feeling Better” Science If you come across someone marketing a detox, they’ll often promise clear skin, more energy and better digestion. Here’s the thing, it’s not the detox that does that, it comes from cutting out alcohol, processed foods and excess sugar during the detox period. You don’t need the lemon water to reap the benefits. Eating nutrient rich, whole foods will do the trick just the same. Detox Danger Detoxes are usually passed off as harmless scams, but some can actually be really dangerous. Unregulated supplements, extreme fasting and colon cleanses, yes you read that correctly, can lead to dehydration, imbalances in your electrolytes and can even damage your organs. “Flushing out” your system can cause people to stress about perfectly normal bodily functions, leading to people to try unhealthy behaviours. The Bottom Line Detoxes are the biggest myth in fitness and wellness, designed to capitalize on quick fixes and instant results. Your body doesn’t need them and they certainly don’t deliver on their promises. Instead of wasting money on overpriced cleanses and gimmicks, focus on the fundamentals. Balanced diet, hydration, exercise and sleep and never super glamorous, but they work. The icing on the cake is that it’s backed by science. Don’t let clever marketing lead you astray, your liver is doing just fine without the bottle of green juice.
Read more