Supplements

The supplement industry is worth tens of billions of dollars and built substantially on the gap between what products promise and what they deliver. Walk into any supplement store and you’ll find hundreds of products with impressive-sounding ingredients, clinical-looking labels, and marketing copy that implies a transformation is one scoop away.

Most of it isn’t worth your money.

That’s not cynicism — it’s the conclusion you arrive at when you look at the actual research rather than the label. The evidence base for most supplements is thin, funded by the industry, or both. A small number of supplements, however, have accumulated enough independent, replicated research to earn genuine confidence. Those are the ones worth understanding.

This section covers the three supplements with the strongest evidence-to-cost ratio for anyone who trains: protein, creatine, and pre-workout. Not because the list of useful supplements ends there, but because these are the ones to get right first — the foundation everything else sits on.

How to Think About Supplementation

Before getting into specifics, the framing matters: supplements are exactly what the name says. They supplement a diet and training program that already works. No supplement fixes poor nutrition, insufficient sleep, or inconsistent training. The lifter who has those foundations in place and adds the right supplements gets a meaningful edge. The lifter who reaches for supplements instead of fixing those foundations is wasting money.

The other thing worth establishing is the hierarchy of evidence. Supplement marketing relies heavily on studies funded by manufacturers, conducted on small samples, over short durations, sometimes in populations that don’t reflect healthy adults who train. Independent, peer-reviewed research — especially meta-analyses that pool results across multiple studies — is the standard worth trusting. Where that evidence is strong, it’ll be said clearly. Where it’s weak or mixed, that’ll be said too.

Protein

Protein supplements — primarily whey, but also casein, egg white, and plant-based options — are the most widely used and the most straightforwardly justified. They are food: concentrated protein in a convenient, fast-absorbing form. They don’t do anything that chicken breast or Greek yoghurt doesn’t do. What they offer is convenience and reliable macronutrient content at a reasonable cost per gram of protein.

The case for protein supplementation rests on one well-established fact: most people who train seriously struggle to hit their protein targets through whole food alone, especially on a time-constrained day. A protein shake bridges the gap without adding significant fat or carbohydrate. That’s the entire value proposition, and it’s a real one.

Whey protein, derived from milk, is the most studied and most bioavailable option. It’s fast-digesting, rich in leucine (the amino acid that most directly triggers muscle protein synthesis), and effective at supporting recovery when consumed around training. Casein digests slowly and is better suited to overnight use. Plant-based options — pea, rice, soy — have improved significantly and are viable alternatives for those avoiding dairy, particularly when combined to cover the full amino acid profile.

The protein supplements page covers types, timing, dosing, and how to evaluate quality when choosing a product — including what to look for on the label and what the marketing language actually means.

Creatine

Creatine is the most researched supplement in sports nutrition and one of the few with an evidence base large enough to make strong claims with confidence. It works, it’s safe for healthy adults, and it’s cheap. That combination is rare enough in this industry to be worth emphasizing.

Creatine is stored in muscle tissue and used to regenerate ATP — the immediate energy currency of muscle contraction — during short, high-intensity efforts. Supplementing it saturates muscle creatine stores beyond what diet alone produces, which translates into slightly more power output per set, slightly more volume capacity over a session, and meaningfully better recovery between hard efforts. Over months of training, that small per-session edge compounds into measurably greater strength and lean mass gains compared to training without it.

The effects are most pronounced in high-intensity, short-duration work — strength training, sprinting, power sports — and less relevant for endurance activities. The standard dose (3–5g daily) is effective, inexpensive, and has been studied at this dose over periods of years without adverse effects in healthy adults.

Creatine also has an emerging and credible evidence base for cognitive function — it plays a role in brain energy metabolism in the same way it does in muscle — which makes it one of the few supplements with a compelling case on both physical and mental grounds.

The creatine page covers the mechanisms, protocols, common myths (including the loading phase debate and the water retention concern), and what the current research actually supports.

Pre-Workout

Pre-workout supplements are the most variable category of the three — ranging from products with solid, evidence-backed ingredients at effective doses to products that are essentially expensive caffeine delivery systems dressed up with proprietary blends and exotic ingredients.

The core of any worthwhile pre-workout is caffeine, and caffeine’s effect on training performance is one of the most consistently demonstrated findings in exercise science. It increases alertness, reduces perceived exertion, improves power output, and delays fatigue. At the right dose — typically 3–6mg per kilogram of body weight — it reliably makes training feel easier and perform better.

Beyond caffeine, a handful of other ingredients have meaningful evidence: beta-alanine buffers lactic acid and delays muscular fatigue (the tingling sensation it produces is harmless); citrulline malate improves blood flow and reduces post-exercise soreness; and creatine, when included in a pre-workout formula, provides its usual benefits.

The problem with many pre-workout products is proprietary blending — listing ingredients without doses, hiding inadequate amounts behind impressive names. An informed buyer knows what doses of each ingredient are effective, which means they can evaluate a label rather than rely on marketing. The pre-workout supplements page covers the key ingredients, effective doses, what to avoid, and how to time pre-workout use — including why evening training and stimulant intake is a combination worth thinking carefully about.

What Comes Next

The three supplements covered here are the foundation. As the site expands, further additions will be covered with the same standard: clear mechanisms, honest assessment of the evidence, and practical guidance. For the nutritional foundation that underpins all supplementation decisions, the nutrition section covers the dietary principles that determine how much supplementation is actually needed and where.