The TrainScript Blog

Practical guides on using AI to build better programs, save time, and scale your coaching.

Hypertrophy Coaching

AI Prompts for Bodybuilding Coaches: A Real Workflow for Hypertrophy Blocks

AI writes hypertrophy programs that look right and quietly inflate volume. The context block that fixes it, and the audit prompt that makes the model count its own sets.

9 min read
Tool Comparison

ChatGPT Free vs Paid for Fitness Coaches: What the Free Tier Actually Blocks

Free ChatGPT no longer runs out of messages. It runs out of workflow: file caps, Project limits, and a short memory that fails silently. When the $20 is worth it, and when it isn't.

9 min read
Client Populations

AI for Coaching Older Clients: A Real Workflow for the 50+ Body

Give AI a client's age and nothing else and it writes for a demographic. The four failure patterns, the context block that fixes them, and prompts that respect a real constraint.

9 min read
Ethics & Trust

Should You Tell Clients You Use AI? (And What to Say When They Ask)

The line isn't AI versus no-AI, it's reviewed versus unreviewed. A disclosure rule that holds up, word-for-word scripts for four situations, and the client-data practice most coaches have skipped.

9 min read
Quality Control

The Mistakes AI Makes in Workout Programs (And How to Catch Them Before Your Clients Do)

AI writes bad programs in the same clean tables as good ones. The six recurring errors to look for — volume inflation, fake personalization, and more — plus the five-minute checklist that catches them.

10 min read
AI Tools

ChatGPT vs Claude vs Gemini for Fitness Coaches: Which AI Handles Which Job

Stop asking which AI is best. Route tasks instead: ChatGPT for programs, Claude for check-ins, Gemini for form-check videos — including the prompt that makes video review faster.

10 min read
Retention

How to Use AI for Client Retention (Spot At-Risk Clients Before They Quit)

You don't lose clients on the day they cancel — you lose them in the weeks before. A retention workflow that uses AI to catch the drift early, from the notes you already have.

11 min read
AI Tools

The Honest AI Tool Stack for Online Coaches (What You Actually Need)

Not a ranked listicle. The two layers that matter — a thinking engine and a delivery platform — the gaps to fill, and the tools to skip. You need maybe four, not twelve.

10 min read
Client Onboarding

AI-Assisted Client Onboarding for Online Fitness Coaches (From Intake Form to First Check-In)

The two-to-three hours between "payment received" and "first workout delivered," compressed into a 45-minute routine — intake synthesis, program brief, and week-one messages, with the actual prompts.

11 min read
AI Workflow

How to Set Up Your AI Coaching Workspace (So You Stop Re-Typing Everything)

The setup most coaches skip — a saved prompt library, client context files, a method database, and Projects — so AI stops being a stranger you re-brief every morning.

10 min read
Endurance Coaching

AI Prompts for Running Coaches: A Real Workflow for Endurance Programming

Four real prompts (macro, weekly, taper, mid-cycle adjustment), the four contexts your AI needs, and the parts only coaching judgment can do — for coaches managing a roster, not runners self-coaching.

10 min read
Nutrition Coaching

How to Use AI for Nutrition Coaching (When You're a Trainer, Not a Dietitian)

A workflow for the nutrition coaching you're already doing — macro targets, weekly check-ins, adjustments — without pretending to be a clinical nutritionist or burning two hours per client per week.

12 min read
Coaching Business

How to Digitize a 15-Year-Old Coaching Practice (In This Order)

Payments first. Scheduling next. Session tracking after. AI and program delivery last. The migration sequence for veteran coaches who don't want to blow up what already works.

11 min read
Coach Workflow

Where Online Fitness Coaches Actually Lose Time (And Where AI Helps)

A workflow audit for online coaches — five places the week leaks, with realistic time numbers, and an honest read on which leaks AI can actually fix.

10 min read
Strength Sport

AI for Powerlifting Coaches: A Real Workflow for Block Periodization

Three real prompts, the four contexts your AI needs, and the parts only coaching judgment can do — for coaches who've tried ChatGPT once and walked away annoyed.

10 min read
Framework

The SCRIPT Framework: Complete Reference for Fitness Coaches

Every step explained in full — with real prompts, common mistakes, and copy-paste templates for programming, check-ins, and client communication.

18 min read
CrossFit Coaching

AI Prompts for CrossFit Coaches: What Actually Works

Real prompts for WOD design, scaling, cycle planning, and athlete communication — from a coach who's been running a box since 2017.

12 min read
Tool Comparison

ChatGPT vs Claude for Fitness Coaches: Which One Is Actually Better?

Honest head-to-head on programming, check-ins, nutrition, and client comms. They're both excellent — but they each have a home turf.

10 min read March 2026
Guide

How to Write Client Check-Ins With AI (Without Sounding Generic)

Stop spending hours on check-in responses. Use AI to write personalized, thoughtful replies in minutes — without sacrificing the human touch clients expect.

8 min read March 2026
Tutorial

How to Create a Training Program with ChatGPT (Step-by-Step)

Build a personalized workout program in under 10 minutes. Copy-paste prompts included. No fitness background required.

10 min read March 2026
AI Tools

Claude for Fitness Coaches: The Complete Guide (2026)

Why serious fitness coaches are switching to Claude for workout programming. Better structure, cleaner output, and prompts that follow instructions.

14 min read March 2026
Scaling

How to Scale Online Coaching with AI (Without Losing the Human Touch)

Scale from 20 to 100+ clients without burning out or sacrificing quality. AI handles production, you handle relationships.

12 min read March 2026
FAQ

AI for Fitness Coaches: Your Questions Answered

30+ real questions about AI for coaching — safety, ethics, workflows, and what actually works. Straight answers from coaches who use AI daily.

18 min read March 2026
AI Programming

How to Use AI for Workout Programming: The SCRIPT Framework

Stop copy-pasting generic prompts. Learn a repeatable 6-step framework for getting useful, personalized training programs from ChatGPT and Claude.

12 min read February 2026
Prompt Engineering

Prompt Engineering for Fitness Coaches: Write Prompts That Actually Work

Why most AI prompts give you garbage output—and the fitness-specific techniques that fix it.

10 min read February 2026
Guide

The Complete Guide to AI for Fitness Coaches (2026)

Everything you need to know about using AI in your coaching business—tools, frameworks, workflows, and what to skip.

15 min read February 2026

Get the AI Programming Playbook

10 copy-paste prompts for writing better training programs, plus the SCRIPT framework. Free.

About TrainScript: AI prompts and frameworks built for fitness coaches, developed by Mehdi El-Amine (CrossFit coach since 2010), creator of the SCRIPT framework. Learn more →