Expert Guide: How Sports Professionals Evaluate Exercise Gadgets and Supplements

Every week, athletes come to me with the same question: Does this work? They're holding a bottle of something, or showing me a wristband, or describing a device they saw online. The answer I give them is almost never yes or no. It's usually: Let's look at what the evidence actually says.

I work with competitive athletes across multiple sports, and part of my job is helping them navigate the vast marketplace of supplements and gadgets that promise to make them faster, stronger, more recovered. The industry is enormous and largely unregulated in ways that matter. A product can make claims that sound scientific without having done the work to back them up. Marketing departments are sophisticated. They know how to make something sound credible. So I've developed a framework—nothing fancy, just a way of asking questions that cuts through the noise.

First, I look for peer-reviewed research. Not blog posts, not testimonials from other athletes, not the studies the company itself funded. I'm looking for independent research published in journals where other scientists have scrutinized the work before it saw daylight. If a supplement or device has been studied, those studies should be findable. If they're not, that's information too. It tells you something about how much confidence the makers have in their own product. I ask: Has this been tested in conditions that match how my athlete will actually use it? A study on elite cyclists might not tell you much about a recreational runner. Context matters enormously.

Second, I examine what's actually in the product. Transparency is a red flag when it's missing. If a supplement lists its ingredients but not the amounts, or uses proprietary blends that hide the formula, I'm skeptical. I want to know exactly what my athlete is putting into their body, and I want to know whether those ingredients are present in quantities that match what the research suggests is effective. I also want to know about potential interactions with other supplements or medications. This requires reading labels carefully and sometimes consulting with a pharmacist or sports nutritionist.

Third, I think hard about individual variability. This is where a lot of people go wrong. They see that a supplement worked for someone else and assume it will work for them. But human bodies are different. Genetics, training history, diet, sleep, stress—all of these shape how someone responds to a given intervention. What's effective for one athlete might be useless for another. This is why I'm cautious about broad claims. I'm more interested in whether a product might help a specific person in a specific context.

Fourth, I consider the risk-benefit calculation. Even if something is safe, is it worth the cost? Is it worth the mental energy of adding another variable to an athlete's routine? Sometimes the most effective intervention is the simplest one: better sleep, more consistent training, adequate calories. A gadget that costs several hundred dollars might provide marginal gains that pale next to the fundamentals. I ask athletes: What problem are you actually trying to solve? Often, when we dig into that question, the answer isn't a new product.

What I tell athletes is this: You should be skeptical. Not cynical, but skeptical. Ask for the evidence. Ask whether the evidence applies to you. Ask whether the cost and complexity are worth the potential benefit. The fitness industry makes money by making you feel like you're missing something, like there's a shortcut or a secret. Usually, there isn't. The unsexy truth is that consistency, good fundamentals, and patience work. But I understand why people want to believe otherwise. My job is to help them see clearly enough to make their own choice.