The endurance sport space is full of training advice. Some of it is excellent. A lot of it is mediocre. And some of it is actively harmful. The problem is that bad advice often sounds convincing, especially when it comes from someone with a large following or an impressive personal result. Here is how to tell the difference.
Why Bad Advice Spreads So Easily
Bad training advice spreads because it is usually simple, confident, and appeals to what athletes want to hear. It promises quick results, offers a single solution to a complex problem, or validates what the athlete is already doing. Good advice, by contrast, is often nuanced, conditional, and less exciting.
Social media has amplified this problem. The format rewards bold claims and punishes nuance. A post that says "this one workout will transform your run" gets far more engagement than one that says "your run improvement depends on a combination of aerobic development, threshold work, running economy, and load management, all of which vary based on your individual physiology and training history."
The second statement is far more accurate. But it does not get shared.
Five Red Flags to Watch For
1. Universal prescriptions without context. Any advice that tells every athlete to do the same thing should raise an immediate flag. "Every triathlete should run four times a week" ignores the fact that optimal run frequency depends on training age, injury history, available time, and current fitness. Different athlete types need fundamentally different approaches. Good advice always comes with conditions. If someone is prescribing the same approach regardless of individual circumstances, they are selling a product, not providing coaching.
2. Appealing to authority instead of evidence. "I did this and qualified for Kona" is not evidence that it will work for you. Personal results are the product of genetics, training history, lifestyle, and countless other variables. What worked for one athlete may be completely inappropriate for another. Credible advice explains why something works physiologically, not just that it worked for one person.
3. Dismissing established physiology. Endurance training science is not perfect, but the fundamentals are well established. If someone is claiming that everything you know about aerobic training is wrong, or that a basic physiological principle does not apply, they need extraordinary evidence to support that claim. Most of the time, they do not have it.
4. Overcomplicating simple concepts. Good training is not complicated. It requires consistency, appropriate intensity distribution, progressive overload, and adequate recovery. If someone is making training sound impossibly complex - requiring specialised equipment, proprietary methods, or secret protocols - they are likely creating complexity to justify their product or service rather than to improve your performance.
5. No acknowledgement of trade-offs. Every training decision involves a trade-off. More volume means more fatigue. More intensity means more recovery demand. More specificity means less variety. Consider the common claim that every triathlete needs strength training - it rarely acknowledges the opportunity cost of lost sport-specific hours. If someone is presenting a training approach as having only benefits and no costs, they are either not being honest or they do not understand the system well enough to see the downsides.
How to Evaluate Training Claims
When you encounter a piece of training advice, ask three questions. First, does this align with basic exercise physiology? If it contradicts well-established principles, the burden of proof is on the person making the claim. Second, does this account for individual variation? Good advice acknowledges that different athletes respond differently to the same stimulus. Third, what is the trade-off? If no trade-off is mentioned, something is being left out.
You do not need a degree in exercise science to evaluate training advice. You just need a healthy scepticism toward simple answers to complex questions and a willingness to ask why rather than accepting claims at face value.
Trust the Process, Not the Personality
The best coaches and the best training advice share a common trait: they focus on principles rather than personalities. They explain the reasoning behind their recommendations. They acknowledge uncertainty. They adjust based on individual response rather than forcing a template onto every athlete.
If someone cannot explain why they are recommending something beyond "it works for me" or "trust me," that is not coaching. That is guessing with confidence.
Good advice comes with conditions, trade-offs, and reasoning. If it sounds too simple to be true, it probably is.