Fuel smarter. Train harder. Recover better. Your Guide To Supplements.

Member Education  ·  Nutrition & Supplements

Creatine, electrolytes & protein:
your no-nonsense guide to gym supplements

5 min read

Walk into any gym and you'll see water bottles, shaker cups, and a rainbow of supplement pouches. But with so much noise out there, it can be hard to know what's actually worth your money — and what's just clever marketing. At Stack House Gym in Westcliff-on-Sea and Rayleigh, we're all about cutting through the clutter. Here's our honest, science-backed guide to three gym supplements that can make a genuine difference to your training.

01 — Creatine

Benefits of creatine for gym training

Strength  ·  Power  ·  Muscle

Creatine is arguably the most well-researched sports supplement in existence. It occurs naturally in your muscles and helps produce ATP — the energy currency your body relies on during short, explosive bursts of effort like lifting, sprinting, or a tough functional fitness circuit.

Supplementing with creatine tops up your muscle creatine stores beyond what diet alone can achieve. The result? You can push harder, lift heavier, and squeeze out those extra reps that make the real difference over time.

Increased strength output Faster muscle recovery Improved power & performance Supports lean muscle gain

How much creatine should I take?

Creatine monohydrate is the gold standard form — affordable, effective, and extensively studied. A daily dose of 3–5g is all you need. There's no need to “load” or cycle it; consistency is what matters. Take it at the same time each day, with or without food.

Stack House tip: Creatine isn't just for bodybuilders. Whether you're attending our Full Body Strength & Conditioning class, a Boxing Fitness session, or building your base in Functional Fitness, creatine can help you get more from every session — regardless of your fitness level or goal.

02 — Electrolytes

Benefits of electrolytes for exercise and hydration

Hydration  ·  Endurance  ·  Focus

You already know that staying hydrated matters — but plain water doesn't always cut it, especially during intense or prolonged training. When you sweat, you lose more than just water. You lose key minerals — sodium, potassium, magnesium, and calcium — that are essential for muscle function, nerve signalling, and sustained energy levels.

Electrolyte supplements replenish these minerals, helping you maintain performance from the first rep to the last. They can also reduce the cramping, fatigue, and brain fog that come with dehydration — all things that quietly sabotage a good training session.

Prevents muscle cramping Sustains energy levels Supports mental clarity Improves endurance

When should I take electrolytes?

Electrolytes are beneficial before, during, or after exercise — particularly for sessions lasting over 45 minutes, or any class where you're working up a significant sweat. Look for products that are low in added sugar. Even lower-intensity sessions like Yoga or Pilates can benefit from electrolyte replenishment, especially in warmer months.

Stack House tip: If you train regularly, train in warm conditions, or tend to sweat heavily, electrolytes are a simple and cost-effective upgrade. They work for every type of training — not just high-intensity workouts.

03 — Protein

Benefits of protein supplements for muscle recovery

Recovery  ·  Muscle  ·  Body Composition

Protein is the building block of muscle. Every time you train, you create tiny tears in your muscle fibres — and it's protein that repairs and rebuilds them, making them stronger in the process. The challenge for many people is simply getting enough protein from food alone, particularly with a busy lifestyle.

Protein supplements — whey, casein, or plant-based options like pea or rice protein — offer a convenient, easily digestible way to hit your daily protein targets. Whey protein in particular is fast-absorbing, making it ideal post-workout when your muscles are most primed to use it.

Muscle repair & growth Supports fat loss goals Reduces recovery time Convenient daily protein

How much protein do I need after a workout?

Aim for a protein supplement with at least 20–25g of protein per serving and minimal fillers or artificial additives. You don't need to consume it immediately post-workout — total daily protein intake matters far more than exact timing. Find what fits your routine and stick to it.

Stack House tip: Whether your goal is building lean muscle, improving your body composition, or simply recovering well enough to train again tomorrow — a quality protein supplement is one of the most practical and cost-effective tools in your nutrition kit.

Frequently asked questions about gym supplements

Are supplements safe to take every day?

Creatine monohydrate, electrolytes, and protein supplements are all safe for daily use for healthy adults. As with any supplement, we'd always recommend checking with a healthcare professional first — especially if you have any existing health conditions or are taking medication.

Do I need supplements to see results at the gym?

No — supplements support your training, they don't replace good habits. A balanced diet, consistent training, and quality sleep are the foundation. Supplements like creatine and protein can meaningfully accelerate your progress when those foundations are in place.

Can women take creatine and protein supplements?

Absolutely. Creatine and protein supplements are equally beneficial for women. Creatine will not cause bulking — it supports strength and recovery. Protein helps with lean muscle maintenance and body composition goals, regardless of gender.

A final word: Supplements are exactly that — supplementary. They work best alongside a balanced diet, consistent training at Stack House Gym, and quality sleep. None of them replace the fundamentals, but used wisely, they can genuinely accelerate your progress. If you have any health conditions or are unsure what’s right for you, it’s worth checking with a healthcare professional before starting anything new.

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Functional Fitness: Train for Real Life, Not Just the Gym