5 Popular Choices Explained
Part 1: Protein Powder, Creatine, BCAAs, Multivitamins and Omega-3 — What They Do, What the Science Says and Whether You Really Need Them.
Walk into almost any gym and you'll see protein shakes, colourful drinks bottles and people talking about creatine. But which supplements are genuinely useful, and which ones are simply good at marketing themselves?
Whether you're starting your fitness journey, returning after a break or training regularly, the supplement aisle can be confusing.
One person swears by protein powder. Another wouldn't train without creatine. Someone else insists BCAAs are essential during a workout.
So, where do you begin?
At M.U.S.T. Fit® Sports, we believe that feeling good, moving more and building confidence should be accessible to everyone. And that includes understanding what we put into our bodies.
In Part 1 of our supplement series, we're looking at five familiar products, what they're designed to do, what independent research tells us and whether they might be worth considering.
Before we start: You don't need supplements to join a gym, build fitness or make progress. Food, hydration, sleep, consistency and an appropriate training programme remain the foundations of good health and performance (NIH ODS, n.d.).
1. Protein Powder — Do You Really Need a Shake After the Gym?
Protein is one of the body's essential building blocks. It helps maintain and repair muscle tissue, and it becomes particularly important when you're regularly exercising.
That's why protein powders are so popular.
Whey protein, casein, soy protein and plant-based blends all offer convenient ways to increase daily protein intake.
What does the research say?
Research supports adequate protein consumption for muscle maintenance, growth and recovery, especially alongside resistance training.
Depending on training demands, physically active adults may benefit from approximately 1.2–2.0 grams of protein per kilogram of body weight per day (NIH ODS, n.d.).
But here's something worth remembering: protein powder isn't necessarily better than protein from food.
Chicken, fish, eggs, yoghurt, beans, tofu and other protein-rich foods can all contribute to your daily requirements.
Is protein powder worth taking?
Potentially, yes — if you're struggling to meet your protein needs through ordinary meals.
A shake can be convenient after a workout or during a busy day. But if you're already eating sufficient protein, adding another shake won't automatically produce more muscle.
Our takeaway: Think of protein powder as a convenient food supplement, not a shortcut to fitness.
2. Creatine — One of the Most Researched Gym Supplements
Creatine has become one of the most talked-about products in fitness, and there's a good reason for that.
Unlike many supplements with impressive marketing but limited scientific support, creatine has been studied extensively.
Your body naturally produces creatine, and you also obtain small amounts from foods such as meat and fish.
Most creatine is stored in your muscles, where it helps supply energy for short, intense bursts of activity.
What does the research say?
Studies have found that creatine supplementation can improve performance during repeated high-intensity efforts, including weightlifting and sprinting.
It can help increase strength, power and training capacity over time (NIH ODS, n.d.).
The Australian Institute of Sport also recognises creatine as a supplement with strong evidence for specific sporting uses (AIS, n.d.).
Which type of creatine?
Creatine monohydrate is the most extensively researched form.
More expensive versions have not consistently demonstrated superior results.
Research commonly uses maintenance amounts of approximately 3–5 grams daily in healthy adults, although individual suitability should be discussed with a qualified professional.
Is creatine worth taking?
For healthy adults doing regular strength training or repeated high-intensity exercise, creatine may offer a meaningful benefit.
It isn't essential for everyone, and its advantages are generally less relevant to steady-state endurance exercise.
Some people experience an increase in body weight because creatine increases water stored in the muscles.
Our takeaway: Creatine is one of the stronger evidence-backed options for certain training goals, but it's still a choice, not a requirement.
3. BCAAs — What Are Those Colourful Drinks People Sip During Training?
If you've spent time in a gym, you've probably seen people carrying brightly coloured drinks in large water bottles.
Some contain BCAAs — short for branched-chain amino acids.
The three BCAAs are leucine, isoleucine and valine.
These amino acids are involved in muscle protein metabolism, and they can also be used as an energy source during exercise.
Why do people drink BCAAs during workouts?
BCAA drinks are commonly marketed for muscle support, recovery and reducing fatigue.
There's also a practical reason people enjoy them: a flavoured drink can encourage someone to consume fluid throughout a training session.
But it's important to separate the different benefits.
Hydration: A BCAA drink helps with fluid intake because it contains water. If it includes electrolytes, such as sodium, it may also help replace some minerals lost through sweat.
Muscle recovery: Some studies suggest BCAAs may reduce muscle soreness following demanding exercise. However, findings are mixed, and reductions in soreness don't always translate into improved performance.
Fatigue: Researchers have investigated whether BCAAs can influence perceived fatigue during exercise. The proposed mechanisms are interesting, but human studies have not consistently shown that BCAA supplementation delays fatigue or improves endurance (NIH ODS, n.d.).
Muscle replenishment: BCAAs provide three amino acids, but your muscles also require other essential amino acids for complete muscle protein synthesis. After demanding exercise, carbohydrates may be needed to replenish muscle glycogen, while fluid and electrolytes help address sweat losses.
So, are BCAA drinks worthwhile?
They can be a convenient, enjoyable way to drink during training, especially when the formulation includes appropriate electrolytes.
However, if you're already consuming enough high-quality protein, additional BCAAs may offer little extra muscle-building benefit.
And for many ordinary gym sessions, water alone is sufficient for hydration.
Our takeaway: Enjoy a BCAA drink if it suits your routine, but understand what's actually helping: the fluid, any electrolytes and potentially the amino acids. They each play different roles.
4. Multivitamins — A Daily Insurance Policy or an Unnecessary Expense?
Multivitamins are among the most familiar supplements.
They usually contain a combination of vitamins and minerals intended to support normal bodily functions.
But can taking a multivitamin make you fitter, stronger or more energetic?
What does the research say?
Vitamins and minerals are essential for normal health, but taking extra amounts doesn't automatically improve performance when your nutritional needs are already being met.
A multivitamin may be useful for certain people with restricted diets, inadequate food intake or specific nutritional requirements.
However, it cannot replace the fibre, protein, healthy fats and other beneficial components found in a varied diet.
What should you watch out for?
More isn't always better.
Some vitamins and minerals can be harmful in excessive amounts. It's also possible to consume overlapping ingredients if you're taking several supplements simultaneously.
Is a multivitamin worth taking?
It depends on your diet, circumstances and whether you're likely to have nutritional gaps.
Our takeaway: A multivitamin may help address certain dietary shortfalls, but it's not a guaranteed energy boost or performance enhancer.
5. Omega-3 — Can Fish Oil Help With Exercise and Recovery?
Omega-3 fatty acids are commonly associated with heart health, brain function and inflammation.
The best-known omega-3 fats in fish oil are EPA and DHA.
They're found naturally in oily fish such as salmon, sardines and mackerel.
Plant foods including flaxseeds, chia seeds and walnuts provide another omega-3 fatty acid called ALA.
Why do gym-goers take omega-3?
Some people take omega-3 supplements hoping to support joint comfort, reduce inflammation or improve recovery following exercise.
Researchers have investigated these possibilities, but the evidence for direct improvements in gym performance and muscle recovery remains less consistent than the evidence for creatine.
Do you need an omega-3 supplement?
Not necessarily.
The NHS recommends eating at least two portions of fish each week, including one portion of oily fish.
People who don't eat fish may wish to discuss suitable dietary alternatives or supplementation with a qualified professional.
Fish oil supplements can also interact with some medicines, and high doses aren't appropriate for everyone.
Our takeaway: Omega-3 is worth understanding for its broader nutritional role, but it shouldn't be presented as a guaranteed gym-performance supplement.
So, Which Gym Supplements Are Actually Worth Considering?
After examining these five products, an interesting pattern emerges.
Not every popular supplement has the same level of scientific support.
Protein powder: Useful for conveniently meeting protein requirements, particularly when you're training regularly and struggling to consume enough through food.
Creatine: One of the strongest evidence-backed supplements for improving strength, power and repeated high-intensity exercise performance.
BCAAs: Provide three essential amino acids and may help reduce muscle soreness in some circumstances. However, their additional benefits are uncertain when you're already consuming sufficient complete protein.
Multivitamins: May help address specific nutritional gaps, but taking them doesn't automatically improve gym performance, energy or general health.
Omega-3: Provides essential fatty acids that contribute to normal bodily functions, although direct improvements in exercise performance and recovery remain less certain.
The key question isn't simply, “Which supplements should I buy?”
It's “What does my body actually need, and can I get it from my everyday diet?”
Someone training for their first 5K will have different needs from someone lifting weights five days a week. Someone returning to exercise after years away may have different priorities again.
And none of them necessarily needs five supplements.
Before You Spend Money, Start With These Five Basics
A good fitness routine doesn't have to be complicated.
1. Eat well. Build meals around a variety of nutritious foods, including adequate protein.
2. Stay hydrated. Drink regularly and consider sweat losses during longer or more demanding sessions.
3. Sleep enough. Recovery is part of training, not something separate from it.
4. Train consistently. Regular, manageable activity is more valuable than an occasional extreme workout.
5. Understand your needs. Consider your diet, training goals, health and any potential nutritional deficiencies before choosing supplements.
Supplements can sometimes support those foundations.
They cannot replace them.
The M.U.S.T. Fit® Perspective — Wear What Moves You
At M.U.S.T. Fit® Sports, our philosophy is about more than what you wear.
It's about feeling comfortable, building confidence and finding the motivation to keep moving.
Whether you're walking into a gym for the first time, rebuilding your fitness or working towards a personal goal, you don't need an expensive supplement collection to belong.
Start where you are. Learn what works for you. Build habits you can maintain.
Look good. Feel great. Keep moving.
Coming Next: Part 2 — Five More Supplements Worth Understanding
In our next article, we'll explore another five familiar supplements:
Vitamin D, zinc, magnesium, vitamin B12 and milk thistle.
We'll look at their roles in everyday health, common claims about tiredness and recovery, and what independent research actually tells us.
Because understanding your health is just as important as understanding your workout.
Important Health Advice
Please consult your GP or a suitably qualified nutritional expert, such as a registered dietitian, before starting, combining or changing supplements.
This article is intended for general information and education, not individual medical advice. Supplement requirements vary according to age, diet, health conditions, medication and activity levels. Some products can interact with medicines or cause adverse effects when taken in excessive amounts.
If you're experiencing persistent fatigue, weakness or other unexplained symptoms, seek medical advice rather than relying on supplements to address them.
References
Australian Institute of Sport (AIS) (n.d.) Sports supplements framework. Available at: https://www.ausport.gov.au/ais/nutrition/supplements
National Institutes of Health, Office of Dietary Supplements (NIH ODS) (n.d.) Dietary supplements for exercise and athletic performance: Health professional fact sheet. Available at: https://ods.od.nih.gov/factsheets/ExerciseAndAthleticPerformance-HealthProfessional/
National Institutes of Health, Office of Dietary Supplements (NIH ODS) (n.d.) Omega-3 fatty acids: Health professional fact sheet. Available at: https://ods.od.nih.gov/factsheets/Omega3FattyAcids-HealthProfessional/
National Institutes of Health, Office of Dietary Supplements (NIH ODS) (n.d.) Multivitamin/mineral supplements: Health professional fact sheet. Available at: https://ods.od.nih.gov/factsheets/MVMS-HealthProfessional/
NHS (n.d.) Fish and shellfish. Available at: https://www.nhs.uk/live-well/eat-well/food-types/fish-and-shellfish-nutrition/
