Mr Z
How to Get Genuinely Personalised Fitness Advice From AI
Francesco Zen, founder of ZTraining · Last updated June 19, 2026
"Give me a good workout plan" is like telling a doctor "give me a medication" — without saying what's actually going on, or whether anything is wrong at all.
What actually drives personalisation
AI is good with information. It isn't good at guessing what you didn't say. The more specific and honest the input, the more useful the output — and most people stop at far too little detail.
- Lean mass and body fat — not just total bodyweight
- Real training history, not an idealised version of it
- Recovery patterns: sleep, stress, energy day to day
- Daily life detail: what you actually eat, when, and why
- The things you're worried about — not just the goal, but the doubt underneath it
Be more open than feels natural
The most effective approach is closer to a candid conversation than a request. Saying "I wake up at 6, have a coffee and two eggs, I'm stressed at work and skip lunch most days, and I'm worried I'll fail this plan like the last one" gives an AI something to actually work with. A one-line request for "a good workout plan" doesn't.
Why this matters more than which AI you use
Even a well-built AI coach can only personalise as far as the conversation lets it. The difference between a generic output and a genuinely tailored one is usually less about the model and more about whether anyone — human or AI — was given enough to work with.
Mr Z is designed around this exact gap: it's built to ask for the context most people don't think to offer, because Francesco Zen's coaching method starts from the same place — understanding the person before prescribing anything.
Related: Why ChatGPT gives generic workout plans · Is ChatGPT good for fitness advice?