Using AI to build workouts as a personal trainer

AI isn't going to replace good personal trainers. It can take a fair amount of typing off your plate, though. If you write programs for a dozen or more clients, that's hours a week you could spend coaching instead.

We built an AI workout builder into Valleur, and building it taught us where AI helps a lot and where it's no use at all. It also raises a privacy question that every trainer should think about before typing anything into a chatbot.

What AI does well

Getting from a blank page to a first draft. "Four days a week, upper / lower, intermediate, dumbbells and an adjustable bench, 45 minutes" turns into a sensible week in seconds. Editing a decent draft is faster than writing from scratch, especially for the sessions you've written a hundred times.

Reworking a plan around new limits. A client's gym is closed for a month and they only have dumbbells at home. Another can only spare 30 minutes. AI is good at reshaping an existing plan around a limit like that.

Working around movements a client should avoid. "No overhead pressing" or "nothing with deep knee flexion" is easy to describe and quick for AI to apply.

Where AI falls short

It doesn't know your client. It doesn't know they hate lunges, that they've got a wedding in eight weeks, or that they train better before work. All of that comes from you.

It can't make the judgement calls. Deciding when to push, when to deload, and when to rewrite the plan because life got hard is coaching, and that's what clients pay you for.

General-purpose chatbots also make things up. They'll occasionally invent an exercise, use equipment your client doesn't have, or write a session that's far too long. Always read the draft properly.

Keep client information out of your prompts

This is the most important part. Text you type into an AI tool is sent to the company that runs it, and some services may use it to improve their products. So never type a client's name. Never type health details such as conditions, injuries or medication. Describe the training you want, not the person. Write "avoid overhead pressing", not "Sam has a shoulder impingement".

As a trainer you're responsible for the information clients share with you, and in Australia that can include health information. Write every prompt as if someone else might read it.

Treat every AI draft as a first draft

Think of AI output as coming from a keen junior coach. It's often good, sometimes wrong, and should never go to a client unchecked. Check the exercise choices, the volume, the order and the rest times. Then make it yours: add the cue that works for this client and swap the exercise you know they'll skip.

Use a builder that limits what the AI can do

A general chatbot can suggest anything at all. A builder that only lets the AI pick from a real exercise library, and checks the result against the client's equipment and experience, gives you far fewer surprises and much less to fix.

How Valleur AI works in Valleur Coach

In Valleur Coach, the workout and plan builders both have a "Build with Valleur AI" box. You describe what you want and set the goal, experience level, equipment, days per week and session length. Valleur AI drafts a single workout or a whole week, choosing only from Valleur's exercise library. The draft is then checked against the equipment and experience you picked, and anything that doesn't fit is dropped.

You see the draft before anything happens, and nothing is saved until you choose to use it and save. It's optional, it asks for your consent the first time, and only what you type plus the builder settings are sent to the AI. Every time, a reminder above the box asks you not to include names or health details. Our Privacy Policy has the full detail.

When the draft is ready, you build it into a phased plan the usual way. Our guide to writing a periodised training plan covers that part.

Frequently asked questions

Can AI write workout programs for personal training clients?

AI can write a reasonable first draft quickly, especially for standard splits and equipment limits. It can't account for what you know about a client, so a trainer should always review and adjust the draft before it's sent.

Is it safe to put client information into ChatGPT or other AI tools?

Avoid it. Don't enter names, injuries, medical conditions or medication into any AI tool. Describe the training constraints instead, such as "no overhead pressing", so the prompt has nothing that identifies the client.

Will AI replace personal trainers?

Unlikely. AI saves time on drafting, but clients stay with trainers for accountability, judgement and the relationship, none of which a generated program provides.