You want to get lean and perform better – but you need a system that works with your career and social life.

Get Lean and Athletic with an AI Body Coach; Built from a 30kg Transformation and Real Coaching Experience

This isn't for people who want a strict plan to follow.

But if you're doing the work and want a system that fits your life – instead of an overpriced plan template from your favourite influencer – this will get the job done.

Get Instant Access – $57

30-Day Money-Back Guarantee

This Is How Simple It Should Be for You.

Recently a friend, Cleeve, who had no idea where to start reached out and I pointed him to the AI Body Coach. Two weeks in he sent me this:

Customer DM: 'I'm already 99kg and I haven't even fucking done anything' – reply: 'What sorcery is this'

If You're Already Doing the Work, Why Doesn't Your Body Reflect It?

You're active and you eat well. You're not lazy, but your results don't match the effort and the gap doesn't make sense.

Any of these resonate?

  • Generic plan templates that ignore your schedule and end with weekend burnout
  • No system sustainable enough to survive your career, your social life and your weekends away
  • When you do see a result, you lose it the moment life gets busy

Every week of effort without results feels like a waste of your energy and time.

I've been there.

It wasn't a 12-week sprint that got me from 30kg overweight to 10% body fat. It was a system built around my life.

David Robb January to December 2025 transformation – before and after body composition change

The last push of my 30kg journey.

Install an AI Body Coach

The Mechanism

Install Time: 10 minutes

You don't need to know anything upfront. Your entire transformation lives in one AI chat on your phone – tracking, nutrition, exercise, all in one place, start to finish.

STEP 01

Complete Your Onboarding

A quick, step-by-step session covering your goals, bio, lifestyle, food preferences, fitness level, training style and check-in preferences. Done in under 10 minutes.

STEP 02

Your AI Body Coach Is Built

Your answers are converted into a bespoke master prompt, engineered with evidence-based targets. The output is a system that optimises for body composition (not just weight loss). Coaching intelligence, hardcoded.

STEP 03

Paste & Go

Copy your master prompt into ChatGPT, Claude or Gemini (I've tested them all). Your AI Body Coach is now personalised, responsive and ready to adapt to you in real-time.

When you have a knowledge gap, ask your coach and you'll fill it with my experience.

Demo

Streamlined Onboarding

This is a preview of the actual onboarding flow – the web app you use to build an AI Body Coach that's personalised to you.

ChatGPT · Claude · Gemini
AI Body Coach:
Onboarding

Answer a few questions and we'll build your personalised AI Body Coach – engineered for your life, goals and tastes.

What you'll get

A personalised master prompt built around your body, goals and lifestyle. Paste into any AI model to activate your coach.

Step 4 of 7 · Food Preferences
Food Preferences

Help your coach understand how you actually eat – so every recommendation fits your real life.

What's on your current rotation? Dietary restrictions Where do you usually eat lunch?
Step 6 of 7 · Training Programme
Training Programme

Choose the training structure you want your AI Body Coach to work with.

Complete
Your AI Body Coach is ready

Your master prompt has been built. Paste it into ChatGPT, Claude or Gemini to activate your coach.

You are an expert body composition coach. My goal is to lose 0.5–1kg per week while preserving muscle mass. I weigh 87kg, 181cm, male, 34. I eat Thai, stir fries, grilled chicken and avoid dairy. I work in CBD Sydney. I train 4x per week – full body split. Check me in every Sunday...

✓ We've also emailed this to you

Get Instant Access – $57

What's Inside

  1. 01

    Targets and Training

    You get a workout structure and nutrition targets based on your answers. It adapts based on your first, second, third session – and keeps adapting.

  2. 02

    Real-Time Food Decisions

    Breakfast, lunch, dinner, snacks, what to order at the bar with clients. Ask your coach when you have a gap – it fills the gap.

  3. 03

    Weekly Check-Ins

    Your coach reviews your progress and adjusts your targets. The system gets sharper the more you use it.

  4. 04

    Performance Protocol

    A cognitive and physical performance protocol – the same one I use with my private clients. You'll feel sharper within 24 hours.

  5. 05

    Lean Blueprint

    A 10-week framework that turns your AI Body Coach into weekly, measurable results, with a video that cements the theory so you understand why it works.

Get Instant Access – $57

Engineered by an Ex-Finance Data Consultant

David Robb
David Robb
AI Body Coach Founder · Ex-Finance Data Consultant

Hello! My name's David, a finance data consultant who neglected himself for his career and his social life. I got in shape, coached corporates, founders and executives into fantastic results, and then built an AI Body Coach that solves the problem without me.

Jan 2023
113kg. Active, eating well. Went from figuring it out to being in the best shape of my life.
Oct 2023
Exited finance consulting to become a body and performance coach.
Apr 2025
Ran a 12-week AI coaching experiment on myself. It worked.
Jun 2025
Built "AI David" as a GPT. Rolled it out to coaching clients. They loved it.
Oct 2025
Built the AI Body Coach as a standalone product. Works on any AI.
Apr 2026
Problem solved. Back to B2B consulting. The AI Body Coach lives on.

Four Years of My Life

The experience from countless transformations, including my own, all condensed into an intelligent AI Body Coach.

Ten years ago you'd get a program and a meal plan. Now you get a coach – built on real expertise, with access to the internet, that solves every problem you have in real-time.

Programs are built for people with loose schedules and low commitments. The AI Body Coach adapts to your professional and social obligations and learns how to adapt to you. Counterintuitively, the more life you throw at it, the more bespoke the system becomes.

People who use the AI Body Coach aren't people who successfully followed a 12-week plan. They succeed because they understand their own bodies – because they used a system built from years of experience.

A system I condensed into a seven-step questionnaire and a master prompt that's pasted into your favourite AI.

I've tested them all.

Proof it Works

Like a good consultant, I tested the system on myself for twelve weeks before I rolled it out to my clients.

David Robb 12-week transformation – before and after body composition change

And these are some of the results of that rollout:

Client transformation – significant fat loss and improved body composition
Client transformation – visible body composition change over 12 weeks
Client transformation – lean physique achieved through AI Body Coach system
Client transformation – consistent fat loss with body composition optimisation

They looked better, felt better, and they performed better every day. They learn how to integrate everything that's important in their lives into a system that kept them happy and got them where they wanted to be.

Alex from New Zealand

Alex lost 8kg in 12 weeks

"I'm sharper, leaner and more confident."

Trish from the United Kingdom

Trish lost 5kg in 8 weeks

"I feel in a better position to deal with the stress and I've received so many compliments."

Mack from the United States

Mack lost 35lbs in 6 months

"I'm telling you, I feel so much better! I have more mental clarity throughout the day."

it's repeatable, and that's the entire point.

DMs from Users

Customer DM from Matt
Customer message: I really see the power of this
Customer message: loved going through and setting it up – much easier to commit to longer term
Customer message: the idea of actually using ChatGPT as a coach – adherence is everything
Customer message: broke the micros down and offered plans – fantastic for coaching
Customer message: exactly what I was finding – a structured way to use ChatGPT

If You Want a System That Works, Use This.

If you're in an information-gathering phase, come back when it's actually time to take action.

Personal trainer's cost $100+/session
Online coaches cost $1,000+/month
The AI Body Coach is a one-time $57 and you own it forever.
Get Instant Access – $57

30-day money-back guarantee. You'll love it or I'll refund you and let you keep the system.

Think about all the different ways life treats someone who's in shape versus someone who isn't – the opportunities you get versus the ones you miss. It's about how long you're willing to wait to experience a life that looks different to the one you're stuck in.

If you're not going to act in the next 7 days, skip this. If you are, this really is as simple as it gets.

FAQ

You wouldn't open a chat and ask ChatGPT to make you rich – so why would you think it's the same for your body? A precise, evidence-based approach with real-world coaching philosophy baked into it is the difference between asking ChatGPT to get you fit and using an AI Body Coach.
You've tried programs, plans and willpower. You haven't tried a system designed around the life you actually live – not the life a program assumes you have. This isn't a plan. It's a system that iterates and adjusts as you go.
Good. The more constraints you throw at it, the better it performs. That's why this is a personalised system.
It's an evidence-based strategy with my entire coaching and transformation experience hardcoded into the logic. The master prompt isn't a generic conversation – it's purposefully engineered. Tested with ChatGPT, Gemini and Claude. They all work.
Because the fitness industry hasn't caught up yet and I'm going for a land grab. The introductory price is available while I gather case studies before a wider launch – it will increase to $197. Setting it up is easy, building it wasn't. Ten years in data consulting, a 30kg transformation, deep AI learning and integration – that's what fuels the simplicity. And if you want someone to run it with you? You might've just found your coach.