Ask an AI for "a workout plan" and you'll get one: generic, five days a week, built for a gym you may not have. The model isn't the problem. It just doesn't know you yet. A few lines of context change the result completely.
Tell it six things
- Goal. Stronger on the big lifts, a first 10k, muscle, general fitness. One main goal works better than four.
- Schedule. Which days, and how long per session. "Monday, Wednesday, Friday, about an hour" beats "3 days a week."
- Equipment. Commercial gym, home dumbbells, a hotel gym, nothing at all.
- Experience. How long you've trained, and roughly what you lift or run now.
- Limits. Injuries, movements to avoid, things you hate.
- Length. Four to eight weeks is a good block. Ask for a lighter deload week at the end.
Ask for structure
A plan you can follow has the same shape every day. Ask for each workout to be split into sections, such as Warm-up, Main block and Finisher, with sets, reps and rest for every exercise. Ask for a one-line coaching cue under each exercise; it's the thing you'll actually read between sets.
An example to copy
Build me a 4-week strength plan. I can train Monday, Wednesday and Friday for about an hour, in a commercial gym. I have two years of lifting experience. Main goal: get stronger on squat, bench and deadlift. Split each day into Warm-up, Main block and Finisher, give sets, reps and rest for every exercise, and a short coaching cue under each one. Add a lighter deload in week 4. Save it to Athlyon.
Swap in your own goal, days and gym. If you use Athlyon, the last line saves the plan straight to the app.
Then adjust it, in plain language
The first version won't be perfect, and it doesn't need to be. After a session or two, tell the AI what happened:
- "Wednesday took 80 minutes. Cut it to an hour."
- "My left shoulder doesn't like overhead pressing. Give me an alternative."
- "I'm travelling next week with only dumbbells. Adjust week 2."
This is where AI planning beats a fixed program: the plan changes as fast as your week does.
Follow it somewhere better than a chat
A plan in a chat is hard to use mid-workout. Connect your AI to Athlyon and the plan becomes weeks, workouts and sets on your iPhone, with your previous numbers beside every set. See how for ChatGPT and Claude.