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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

Why Does My Fat Burner Make Me Hot?
Have you ever taken a fat burner and noticed you get a bit warm, start sweating bullets, or notice your heart rate increase slightly? Then youโve just experienced thermogenesis firsthand. Youโve probably seen on your fat burner tub something like โThermogenic blendโ, but what causes thermogenesis? Does it actually translate to fat loss? Let's find out. Whatโs Thermogenesis? Thermogenesis is your bodyโs natural heat production. The fuel for this fire is calories. Pairing that with a calorie deficit, and hard training, youโve got a one-way ticket to lean-ville.ย When supplement companies found this out, they packed their fat burners with ingredients that amplify it.ย Caffeine: The King Of Thermogenesis Caffeine is the champion of thermogenics, itโs in the majority of your fat burners for a reason. Stimulating the nervous system and kickstarting lipolysis, the breakdown of stored fat for energy. Studies say that depending on dosages and tolerances, it can boost metabolic rate by 3-11%. Plus, it has the added benefit of giving you a boost of energy. One thing to look out for is your body adapting to caffeine over time, which can reduce its effects. If your fat burner has a heavy hit of caffeine, make sure youโre cycling it so that its thermogenic effects stay strong. Capsaicin: Turning Up The Heat Ever noticed that you get a bit sweaty when youโre eating spicy food? Thatโs capsaicin working its magic. Found in chilis and other spicy foods, this compound activates receptors that signal the body to produce heat. Research shows that capsaicin can increase the calories you burn at rest, as well as help burn fat. This makes it a powerful thermogenic in fat burners. Unlike caffeine, you donโt build up a tolerance for capsaicin. Itโs also been shown to reduce appetite. Itโs a two-for-one deal! One thing to look out for is higher dosages can cause digestive discomfort. Green Tea Extract: A Heated Sidekick Green tea extract, specifically EGCG (epigallocatechin gallate), an antioxidant found in most teas, works with caffeine to enhance thermogenesis. This combo stops the breakdown of norepinephrine, a hormone that helps your body break down fat. When by itself, the fat oxidation of green tea extract is relatively mild. However, when mixed with caffeine, green tea extract saw a 17% boost in fat oxidation. In most stim fat burners, youโll see these two paired together. Synephrine: The Safer Ephedrine Alternative? If you go way back, youโll probably see a few pre-workouts and fat burners with ephedrine, a powerful stimulant and metabolism booster. Due to multiple heart health issues that it caused, it was banned. Synepherine, found in bitter orange extract, has been found to mildly mimic those fat burning effects, without the risk of a heart attack. Even though it has effects on its own, thereโs some research that suggests synephrine is most effective when combined with other stimulants, like caffeine. This makes a heightened thermogenic effect, but be careful with dosages, as stacking stimulants can risk more side effects. Do Thermogenics Work? Putting it short: yes, but it isnโt going to do it magically. Thermogenics can boost the calories and fat you burn, but you canโt supplement your way out of a poor diet and lack of exercise. Treating thermogenics as an enhancement to your diet and training will make them shine the brightest. Remember to be safe with stimulants, and monitor your intake to mitigate side effects. Happy burning!
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How To Properly Fuel Your Workouts
Ever noticed that your body seems to hill a wall mid workout? Youโre lifting heavy, having a good time, and suddenly you feel sluggish and weak. Thatโs your body saying โHey, Iโve got no fuel left!โ. Having no fuel doesnโt mean that you need to go smash protein bars at your gym counter to get back in the game. There are some supplements that you can throw in a shaker and have during your workout thatโll give you a boost in performance, help with recovery, and stop fatigue in its tracks Essential Amino Acids (EAAs) Probably the most popular intra-workout supplement, amino acids come from proteins that your body digests. This makes them perfect for muscle repair and growth. EAAs are nine amino acids that the body canโt make on its own. We get these EAAs from our diet, or in this case supplementation. Among the nine EAAs, are BCAAs. leucine, isoleucine and valine have been studied to have recovery benefits when in a 2:1:1 ratio (2g of leucine for every 1g of isoleucine and valine)ย ย When you workout, your body breaks down the protein in your muscle into amino acids. Supplementing with amino acids, especially when your protein intake is low, can give your body a better environment to maintain muscle, or even grow. BCAAโs help by promoting muscle protein synthesis, helping your body recover quicker from those hard workouts. Carbohydrates (Carbs) When youโre training hard, your bodyโs energy comes from carbs. These carbs are stored in the muscles and liver as glycogen. When you exercise, the glycogen in your muscles are broken down to give you a steady pace of energy. You only have a limited supply, and once you run out, fatigue comes in and your performance drops. Throwing in some fast digesting carbs into your intra workout stack can refuel the glycogen storage whilst you're working out. Keeping glycogen up when your training can keep your body sustaining energy, get your endurance up and maintain that high intensity you started the session with. Electrolytes If you ever train in a hot and humid environment, and youโre sweating bullets, youโre losing electrolytes. Sodium, potassium and magnesium are minerals that have big parts to play in nerve function, muscle contractions and hydration. When youโre sweating through your shirt and not keeping your electrolytes up, youโll start to see muscle cramps, a decrease in performance and dysregulated body temperature. Incorporating an intra workout that contains electrolytes replenishes the lost minerals, helping your performance and preventing dehydration. Additional Beneficial Ingredients It doesnโt just stop at amino acids, carbs or electrolytes. Here are a few additions to look out for in your next intra workout supplement that can enhance your training: Citrulline: A big part in blood flow and muscle pumps, citrulline can also help with nutrient delivery and waste removal. Creatine: A big player in the production ATP, adding creatine during your workouts can raise your strength and power during those grueling sessions. Conclusion Adding in some intra workout supplements to your stack can give your body the fuel to get through those heavy, gruelling workouts. By enhancing performance, keeping energy levels up and helping with recovery, a blend of carbs, amino acids, electrolytes and other ingredients that support performance, youโll be able to run circles around the competition.
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The Ultimate Cheat Sheet For Losing Fat
Itโs no small feat, losing fat. Itโs hard work and can be downright confusing at times. However, with the right strategy and a sprinkle of consistency, youโll have a surefire recipe to make the fat loss journey much more smoother and effective. If youโre preparing for a holiday, a photoshoot, you want to feel healthier and more comfortable or you are just starting out in the gym, this cheat sheet gives you the essentials that you need to cut the fat and get you feeling good. Step 1: Calculate, Deficit And Conquer If thereโs one thing that you should take away from this cheat sheet, itโs calories in vs. calories out. If you want to lose your excess body fat, then your body needs to use the fat as an energy source, rather than the food you eat. Hereโs how to get started: Finding Your BMR (Basal Metabolic Rate): Your BMR is how many calories youโre burning when youโre resting. There are plenty of calculators online that can help you figure this out. The majority use these equations: Men: BMR = (10 ร your weight in kg) + (6.25 ร your height in cm) - (5 ร your age) + 5 Women: BMR = (10 ร your weight in kg) + (6.25 ร your height in cm) - (5 ร your age) - 161 Measure Your Movement: To make your BMR more accurate, you can multiply it by these numbers, depending on how active your lifestyle is: 1.2 for a sedentary lifestyle (Little to no exercise) 1.55 for a more active lifestyle (Exercise 3-5 days a week) 1.9 for a very active lifestyle (Very hard exercise / physically demanding job) Drop the Calories: Once youโve got your BMR sorted, drop the total calories depending on your lifestyle, so you can lose fat at a sustainable pace. This can be from 300 to 500. Example: A 25 year old woman, that is 85kg, 175cm tall and is moderately active would use the equation like this:ย Finding Resting Calories: (10 ร 85) + (6.25 ร 175) - (5 ร 25) - 161 = 1657.75 Adjusting for Movement: 1675.75 x 1.55 = 2597.413 Dropping calories: 2597.413 - 300 = 2297.413 So working on that, rounded up, 2300 calories is the aim to lose fat for our example. Step 2: Upgrade Your Eating Once youโve got your calories sorted, now itโs time to get the nutrition right. Here are a few tips to get you eating like a king (a shredded king) Prioritise Protein: A daily target of 1.6g-2.2g of protein per Kg of body weight is the perfect spot to make sure your muscles are healthy, Feast on Fibre: When in a deficit, youโre going to be hungry all the time. Adding in fibre filled foods like some fruits, vegetables and whole grains keep you full for longer. Chuck Sneaky Calories: Youโll find calories in everything you eat and even drink. Swapping out things like oil, sauces, energy drinks and coffees for lower calorie options will keep you in a deficit without the speedbumps. Step 3: All Aboard the Strength Train If youโre wanting to look toned and muscular, keeping your gains when youโre cutting is a must. On top of making your physique look shapely, muscle can also boost your metabolism, burning more calories. When doing strength training, stick to theseย Weightlifting is crucial for maintaining muscle while in a caloric deficit. Muscle not only shapes your physique but also boosts your metabolism. Stick to these fundamentals: Frequency: Training 3-5 times a week gives you plenty of room for recovery Programming: Focusing on the main compound variations like squats, deadlifts and presses hit multiple muscle groups. Add in some isolations on top of that for any weaknesses in your physique. Progression: The main key to any strength program is progression. Making sure you push out one more rep than last week will give your muscles the kick up the butt to grow. Step 4: The Power Of Movement You donโt have to be in the gym to be burning calories during the day. Easy daily movements can be added into your day to help you burn fat. Stepping it up: Using a tracker to count your steps is a big part of fat loss. Aiming for around 8,000 - 12,000 a day will help burn the calories. However, something as simple as going for a walk is enough to get started. Heart Gains: Throwing some low intensity steady state (LISS), like walking or cycling, with some high-intensity interval training (HIIT), like stairmaster or the elliptical 2-3 times per gives you that calorie burn that you look for. It also helps with your heart health, which is never a bad idea. Step 5: Strategic Supplementation A perfect tool for fat loss is supplements. Although they can never replace your diet and exercise plan youโve made, you can add these in for some enhancement to your journey. Fat Burners: Although they canโt replace a solid diet and hard training, they do help. With ingredients like carnitine, caffeine and green tea extract, these supplements will slightly boost metabolism and give you some energy as well. Protein Powder: Hitting your protein goal can be hard through food, but by supplementing it with a solid protein powder, you can hit those targets much easier. Creatine: Sure, creatine doesn't specifically target fat loss, but itโs a helpful supplement for maintaining strength and power. Step 6: Monitor And Adjust The road to fat loss isnโt a straight line, your body will adapt to your efforts and youโll plateau. If you track these metrics weekly, youโll be able to stay on track and outpace the plateaus: Weight: Weighing yourself at the same time either daily or weekly can show you how your body reacts to the deficit.ย Measurements: Measuring around your waist, hips and other areas can give you an idea of how your body is changing from fat loss. Photos: The scales donโt show everything. Taking photos of your physique can be beneficial in showing how far your physique is coming. If you ever notice progress stalls, donโt stress. If youโre being consistent, drop the calories or increase movement. The biggest part is consistency. Tick all the boxes daily and watch your body transform over time. 5 Bonus Tips for Fat Loss Success Sleep Matters: Your sleep is a big part of recovery, aim for 7-9 hours a night Stay Hydrated: Water helps in many different ways, 2-3 litres a day is the sweet spot Manage Stress: A boost in cortisol promotes fat storage, we donโt want that in a cut. Endgame: The game isnโt over when youโve lost the weight. Keeping it off with the same consistency will be effortless once youโve hit that goal weight. The Bottom Line When shredding down, you need a balanced approach to good nutrition, hard training, a solid supplement stack and healthy habits. By using this cheat sheet, youโll be equipped with the knowledge to jump into a cut and do it effectively. Stay patient and adjust your goals as you progress. Make sure you do your research and stay safe. Happy Shreds!
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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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