The useful split between coaches and AI
Most writing on this argues about whether AI can replace a coach. If you already have one, that argument is settled and the practical question is narrower: which jobs can you hand to ChatGPT without undermining the coaching arrangement you are probably paying for.
The split that works in practice is between understanding and deciding. Understanding is fair game. Deciding is not.
What an assistant is good for here
- Explaining the session you were given. Why threshold work is prescribed at that duration, what the coach probably means by controlled, what the block is building towards.
- Logistics your coach should not be spending time on. Fitting three prescribed sessions around a work trip, converting paces for a track, working out fuelling quantities for a long run.
- Preparing better questions. Turning a vague unease about the last three weeks into something specific enough to be worth your coach's time.
- Reference. Terminology, physiology, what a term means in the literature.
None of those change the plan, and all of them are things athletes commonly hesitate to ask a coach about because they feel too small.
Where it goes wrong
An assistant will happily rewrite your coach's week, and it will do so confidently, because it does not know there is a coach or what they were building towards. It has no view of your season, no memory of why last month was deliberately easy, and no knowledge of the injury history that shaped the whole structure.
It also tends to agree with you, which is the specific risk for a coached athlete. Go to it after a session you found frustrating and it will usually validate the frustration and offer an alternative, and you now have a plausible second opinion built on none of the information your coach was using.
The honest rule is that an assistant should not be adjudicating between you and your coach, because only one of them has seen you run. What it can safely do is work from the same facts they do, which is where Athmex comes in below.
Keeping the two consistent
Where an assistant is genuinely useful to a coached athlete, it is useful because it is working from the same facts the coach is. Your coach set your threshold; if the assistant is deriving paces from a different number it found or estimated, its explanations will drift away from your actual plan in ways that are hard to spot.
The same applies to your race calendar. A coach's block is shaped by which race is the A race, and an assistant that does not know the priority ordering will treat a tune-up race as a target and give advice that contradicts the plan without either of you noticing.
Where Athmex fits
Athmex stores the facts rather than the plan, which is what makes it compatible with having a coach. The thresholds your coach set, your personal bests, your races with their A, B and C priorities, and your constraints are held as dated records and supplied to Claude or ChatGPT when you ask something.
Athmex writes no sessions, holds no activity history and offers no training advice, so it is not a second coach competing with your first. It is the layer that keeps the AI reasoning from your coach's numbers instead of numbers it made up.
Common questions
Should I tell my coach I use AI?
That is between you and them, and most coaches would rather know. The distinction worth being clear about is that you are using it to understand the plan rather than to audit it.
What if the assistant contradicts my coach?
Assume the coach is right and the assistant is missing context, because that is usually the case. If it surfaces something that genuinely worries you, that is a good question to bring to your coach rather than a reason to change the session.
Does Athmex replace coaching?
No. It stores athlete context and gives no training advice at all. Coached and self-coached athletes use the same product; the difference is only who decides what goes in the plan.