Win back lapsed personal training clients with a short, personal message for each

Most clients don’t quit. They miss a week, then two, and then it feels awkward to come back. A short message from you often fixes that, and it’s the message that never gets written because there are 14 of them to write.

This workflow writes the first draft of all 14. You add one line about each client, the AI drafts a message that sounds like you, and you decide who gets it.

What you’ll end up with

Once a month:

• A list of everyone who has gone quiet, sorted by what to do about them.
• A short message draft for each one, written from your note about that person.
• A separate list of clients you should contact yourself, with no draft.

What you need

• Your AI assistant. You’ll use its projects feature, which keeps your instructions saved between chats. Most major AI assistants have one.
• Your client list with last session dates, from your booking app or a spreadsheet.
• Three or four messages you’ve sent clients before that sound like you.

Step 1: Pull your quiet list (10 minutes)

In your booking app or spreadsheet, find everyone with no session and no reply in the last three weeks. For each, write one line:

• First name.
• When you last saw them.
• What they were working on.
• Why they stopped, if you know.

Use first names only. Leave out medical details. If the reason is an injury or a health issue, just write HEALTH. See PII.

Step 2: Set up the Project (15 minutes)

A Project is a saved space inside your AI assistant. It keeps your instructions and files, so you set this up once and reuse it. Some tools call it a Gem or a custom GPT.

Create a Project called “Client check-backs.” Upload your past messages as my-voice. Then paste in these instructions:

You help a personal trainer write short messages to clients who have
stopped coming. You are not a medical professional and you never give
health advice.

Each month I will paste a list. Each line has: first name, last session,
what they were working on, and why they stopped if I know.

For each client, write one message of 2 to 4 sentences that:
- sounds like my-voice
- mentions one specific thing from my note
- asks how they are doing, with no guilt and no pressure
- makes it easy to come back, and just as easy to say "not right now"

Rules:
- No discounts, offers or deadlines.
- Never mention weight, appearance, or how long it has been in a way
  that could sound like blame.
- Do not invent details. If my note is thin, keep the message simple.
- If the note says HEALTH, or mentions pain, injury, pregnancy or a
  medical condition, write no message. List that client under
  TRAINER TO CONTACT PERSONALLY.
- If the note says they asked not to be contacted, list them under
  LEAVE OFF and write nothing.

Output three sections: MESSAGE DRAFTS, TRAINER TO CONTACT PERSONALLY,
LEAVE OFF.

Step 3: Run it once a month (2 minutes)

Start a new chat in the Project and paste your list:

This month's quiet list. One client per line.

Sam, last session Sep 12, training for a 10k, started a new job
Priya, last session Jun 30, finished her 12-week block, never rebooked
Dev, last session Sep 5, HEALTH

Step 4: Review before you send (10 minutes)

• Read every draft. If you wouldn’t say it out loud to that person, change it.
• Check the specific detail is right. Wrong details are worse than no details.
• Anyone under “Trainer to contact personally” gets a call or a message you write yourself.
• If your gut says call, call. Skip the draft.
• Send each message yourself, from your own phone or email, one at a time.

Common mistakes

Sending the same message to everyone. The one-line note is what makes it personal. Without it, you’ve written a newsletter.

Leading with an offer. The goal of the first message is a reply. Talk about training once they’ve answered.

Following up three times. Send one message. If they don’t answer, leave it until next month’s list, and drop them after two tries.

Pasting your whole client file. The AI needs a first name and one line. It doesn’t need phone numbers, addresses or health history.

Related guides

When a returning client is ready to start again, intake form to 4-week program draft gets their plan drafted. To catch people before they go quiet, see weekly check-in triage.