A personal trainer — San Diego, CA
Scaling online coaching for a personal trainer with AI
Program creation was taking 4 hours per new client. At 20 clients, the math broke. The solution cost $65/mo.
What Was Being Lost
A certified trainer in San Diego had a loyal in-person client base but a failing attempt at online coaching. The problem was time: each online client needed a custom program, a nutrition guide, weekly check-ins, and progress tracking. At 12 clients it was sustainable. At 20 it broke. They were spending 4 hours per new client just on program creation, and the quality wasn’t consistent enough to charge premium rates.
How It Was Built
Built a master prompt with their programming philosophy, exercise library, and periodization principles. New client programs — 12-week, goal-specific, equipment-matched — now take 25 minutes instead of 4 hours.
Inputs: client stats, goal, dietary restrictions, cooking skill level. Output: a full macro-based nutrition guide with meal ideas. Done in 15 minutes vs. 90 before.
Clients fill out a weekly form. Make routes it to Claude which writes a personalized coach response based on their metrics and trends. The personal trainer reviews and sends. Scales to 60 clients without proportional time increase.
What Got Done
Timeline
First 10 online clients scaled in month one. Hit 60 by month 6.
Total Monthly Cost
$65/mo
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