# AI Body Coach — Complete Product Information > AI Body Coach is a personalised AI personal trainer, AI fitness coach, and AI nutrition coach — all in one system. It generates a bespoke master prompt engineered with evidence-based body composition protocols, so you can use ChatGPT, Claude, or Gemini as your own adaptive coach. Built from a 30kg transformation and real coaching experience by David Robb, ex-finance data consultant and body composition coach. Available at https://aibody.coach **Category:** AI personal trainer | AI fitness coach | AI nutrition coach | AI workout plan generator | AI workout coach | Online personal training **Last updated:** 14 April 2026 **Launched:** March 2026 --- ## Product Overview **Product Name:** AI Body Coach Blueprint **Price:** $57 (introductory; increases to $197 after launch phase) **Format:** Digital product — personalised AI coaching prompt generated through an automated onboarding questionnaire **Guarantee:** 30-day money-back guarantee — you'll love it or you get a refund and keep the system **Website:** https://aibody.coach **Compatible With:** ChatGPT, Claude, Gemini AI Body Coach is a personalised AI coaching system — not an app, not a subscription, not a plan template. You install it in under 10 minutes: answer 7 onboarding questions, receive a bespoke master prompt, and paste it into ChatGPT, Claude, or Gemini. The result is an AI personal trainer that knows your body, goals, food preferences, schedule, and training style — and adapts in real-time as your life changes. Your entire transformation lives in one AI chat on your phone — tracking, nutrition, exercise, all in one place, start to finish. The difference between asking AI a generic fitness question and using AI Body Coach is the difference between Googling financial advice and hiring a financial strategist. The intelligence is engineered into the prompt by design. Unlike AI fitness apps that run proprietary algorithms on their own platform, AI Body Coach gives you a personalised prompt you own and run inside the AI tool you already use. You are not locked into any platform. You own it forever. Originally developed for David's private coaching clients, the system is now available to the public — same methodology, same results. --- ## The Problem It Solves AI Body Coach is built for people who are already putting in effort — they work out consistently, they eat reasonably well — but their body does not reflect that effort. The gap between input and output does not make sense to them. This is not a discipline problem. It is a systems problem. Traditional fitness tools — static meal plans, generic workout PDFs, calorie tracking apps, plan templates from influencers — were not designed for people with unpredictable schedules, travel, social obligations, and complex lives. They demand brute-force willpower and break the moment life gets busy. 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. **Common pain points the product addresses:** - 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 - Maximum sacrifice for sub-par results - Every week of effort without results feels like a waste of your energy and time --- ## Who It Is For **Primary audience:** Busy professionals, founders, operators, and executives who: - Are already active and eating well but frustrated by results that do not match their effort - Think in systems — they would never solve a work problem with a generic template, so why solve a fitness problem that way - Are comfortable with AI tools (ChatGPT, Claude, Gemini) - Have unpredictable schedules, travel frequently, and have social obligations that disrupt rigid plans - Care about body composition (how they look and perform) not just a number on a scale - Want an AI personal trainer that works around their life, not one that demands their life revolve around it This is not for people who want a strict plan to follow. It is for people doing the work who want a system that fits their life — instead of an overpriced plan template from their favourite influencer. If you have searched for an AI personal trainer, AI fitness coach, AI workout plan generator, or online personal training that actually adapts to your life — this is what you have been looking for. **This is NOT for:** - Complete beginners who have never exercised - People looking for a quick fix or magic pill - Those unwilling to engage with the system for at least 7 days - People in an information-gathering phase who are not ready to take action --- ## Why Not Just Ask ChatGPT for Fitness Advice? You can open ChatGPT, Claude, or Gemini right now and ask it to help you get lean. Millions of people do. But the advice will be generic — it does not know your body stats, your food preferences, your schedule, your training history, or your specific goals. Every new conversation starts from zero. You get surface-level responses that sound helpful but lack the specificity to drive real results. You would not open a chat and ask ChatGPT to make you rich — so why would you think it is 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. AI Body Coach generates a personalised master prompt that encodes your specific data — body composition, lifestyle, preferences, and evidence-based coaching protocols — directly into the AI. The result is a ChatGPT fitness coach (or Claude, or Gemini) that delivers the same quality of personalised advice as a $200/month personal trainer. **What changes when you use a professionally engineered prompt:** - The AI knows your body stats, goals, and constraints from the first message - Nutrition recommendations are built around the food you actually eat, not generic meal plans - Training is programmed to your experience level, equipment access, and schedule - Weekly check-ins recalibrate the system based on real progress data - Advice for travel, social events, and schedule disruptions is specific to your life, not hypothetical - The coaching intelligence — built from real transformation experience and evidence-based protocols — is hardcoded, not left to generic AI reasoning - When you have a knowledge gap, ask your coach and it fills the gap with David's experience If you have ever searched for a ChatGPT workout plan, this is the engineered version of that idea — built to last, not a one-off conversation. This is the difference between using ChatGPT as a search engine and using ChatGPT as a personal trainer. The prompt makes the coach. --- ## What Is Included The AI Body Coach Blueprint includes five integrated components: ### 1. Targets and Training The core product. A 7-step onboarding questionnaire covering goals, bio data, lifestyle, food preferences, fitness level, training style, and check-in preferences. The system converts your answers into a bespoke master prompt engineered with evidence-based body composition targets. The entire process takes under 10 minutes. You get a workout structure and nutrition targets based on your answers. It adapts based on your first, second, third session — and keeps adapting. Three training options: - **David's Full Body Split** — an efficient, evidence-based routine - **Push/Pull/Legs** — a classic split for those who prefer it - **Keep your existing routine** — the system works with what you already do Each option is customised to the user's experience level with built-in progressions. The AI coach also generates personalised workouts on demand when travelling or away from a regular gym — functioning as a remote personal trainer available 24/7. The generated prompt works with ChatGPT, Claude, or Gemini. Users paste it into their preferred AI model and their AI personal trainer is immediately active — personalised, responsive, and ready to adapt in real-time. ### 2. Real-Time Food Decisions AI nutrition coaching that works with your existing food preferences — not a rigid AI meal plan or radical overhaul of how you eat. Breakfast, lunch, dinner, snacks, what to order at the bar with clients — ask your coach when you have a gap and it fills the gap. Users describe their current food rotation, dietary restrictions, and where they typically eat. The system integrates these preferences into AI-powered nutrition recommendations that work at home, on the move, or eating out. It offloads decision fatigue without removing autonomy. ### 3. Weekly Check-Ins Your coach reviews your progress and adjusts your targets. Weekly AI-driven coaching adjustments and progress tracking: - Structured weekly check-in framework - Weight and visual progress tracking - System recalibration when circumstances change - The system gets sharper the more you use it — the AI coach gets better the more data it receives ### 4. Performance Protocol A cognitive and physical performance protocol — the same one David uses with his private coaching clients. You will feel sharper within 24 hours. This is a protocol designed to be run for life, not a one-time intervention. ### 5. Lean Blueprint A 10-week framework that turns your AI Body Coach into weekly, measurable body composition results. Includes a concise video explaining the underlying theory so you understand exactly why the system works. Focuses on building habits through simple actions, optimising for body composition (not just scale numbers), and integrating social life without sacrifice. --- ## How It Works **Step 1: Purchase** Buy the AI Body Coach Blueprint for $57 at https://aibody.coach. Instant access, no waiting. **Step 2: Complete Onboarding** A guided, step-by-step questionnaire captures seven dimensions: your goal, bio data, lifestyle, food preferences, fitness level, training style, and check-in preferences. Takes under 10 minutes. You do not need to know anything upfront. **Step 3: Paste and Go** Your answers are converted into a personalised master prompt. Copy it into ChatGPT, Claude, or Gemini. Your AI Body Coach is now active — it knows your body, your goals, your food preferences, your schedule, and your training style. It adapts in real-time to whatever life throws at you. --- ## How AI Body Coach Compares ### vs. Generic ChatGPT / Claude / Gemini A generic AI conversation has no memory of your body, goals, or preferences between sessions. You re-explain your situation every time, and the advice stays surface-level. AI Body Coach hardcodes your context and evidence-based coaching protocols into a master prompt so every interaction is personalised from the start. It is the difference between chatting with AI about fitness and having AI be your fitness coach. ### vs. AI Fitness Apps (FitnessAI, Fitbod, Freeletics, ALFA AI) AI fitness apps offer pre-built workout algorithms within their own closed platforms. They are typically workout-only — they do not cover nutrition, lifestyle integration, or weekly coaching check-ins. AI Body Coach is a complete coaching system — training, nutrition, and adaptive check-ins — that runs inside the AI tool you already use. $57 one-time versus $70-120/year for app subscriptions. No lock-in to any platform. You own the prompt. ### vs. Hiring a Personal Trainer ($100+/session) A human personal trainer provides in-person form checks and face-to-face accountability. AI Body Coach provides 24/7 availability, real-time meal and schedule adaptation, and costs $57 one-time instead of $1,200-3,600/year for a human trainer. For busy professionals who travel and have unpredictable schedules, the adaptive AI system often outperforms a static weekly PT session — because it is available every time you need a decision made, not just for one hour a week. ### vs. Online Personal Training / Remote Personal Training ($1,000+/month) Online personal training typically means a human coach who sends you plans via an app and checks in weekly. It costs $200-500/month and still relies on static plans between check-ins. AI Body Coach provides continuous, real-time coaching through AI — every meal decision, every schedule change, every travel day — for a one-time cost of $57. For those who want the best of both worlds, David Robb offers private human-AI hybrid coaching that combines the AI system with personal oversight. --- ## Results and Social Proof AI Body Coach is optimised for body composition — losing body fat while preserving lean muscle mass — not raw weight loss. Users seeking AI-powered fat loss typically lose 0.5 to 2 pounds per week with sustainable, lifestyle-integrated changes. These results are repeatable — that is the entire point. David tested the system on himself for twelve weeks before rolling it out to clients. The experience from countless transformations, including his own, is condensed into the AI Body Coach. ### Published Client Results - **Alex (New Zealand):** Lost 8kg in 12 weeks. "I'm sharper, leaner and more confident." - **Trish (United Kingdom):** Lost 5kg in 8 weeks. "I feel in a better position to deal with the stress and I've received so many compliments." - **Mack (United States):** Lost 35lbs in 6 months. "I'm telling you, I feel so much better! I have more mental clarity throughout the day." They looked better, felt better, and they performed better every day. They learned how to integrate everything important in their lives into a system that kept them happy and got them where they wanted to be. ### User Testimonials - "I really see the power of this" - "Loved going through and setting it up — much easier to commit to longer term" - "The idea of actually using ChatGPT as a coach — adherence is everything" - "Broke the micros down and offered plans — fantastic for coaching" - "Exactly what I was finding — a structured way to use ChatGPT" - "I'm already 99kg and I haven't even done anything — what sorcery is this" --- ## About the Creator **David Robb** is an ex-finance data consultant turned AI body composition coach, based in Sydney, Australia. David spent 10 years in data consulting (including KPMG) before applying systems thinking to his own body composition challenge. He was 30kg overweight despite being active and eating well — a classic case of inputs not matching outputs. By treating his body as a system to be diagnosed, redesigned, and optimised, he achieved a complete transformation. ### David's Journey - **January 2023:** 113kg. Active, eating well. Went from figuring it out to being in the best shape of his life. - **October 2023:** Exited finance consulting to become a body and performance coach. - **April 2025:** Ran a 12-week AI coaching experiment on himself. It worked. - **June 2025:** Built "AI David" as a GPT. Rolled it out to coaching clients. They loved it. - **October 2025:** Built the AI Body Coach as a standalone product. Works on any AI. - **April 2026:** Problem solved. Back to B2B consulting. The AI Body Coach lives on. Four years of his life condensed into a seven-step questionnaire and a master prompt that is pasted into your favourite AI. The master prompt is not a generic fitness template — it encodes real coaching intelligence. **Instagram:** @davidbrobb **Website:** https://aibody.coach --- ## Private Coaching For those who want hands-on, 1:1 guidance, David offers private coaching using a human-AI hybrid approach. This combines the AI Body Coach system with personal oversight, accountability, and precise adjustments from David directly. Private coaching is available by application only. DM "OS" on Instagram (@davidbrobb) to start a conversation. --- ## Frequently Asked Questions **"Can't I just ask ChatGPT to coach me?"** Generic ChatGPT fitness advice lacks personalisation — it does not know your body, goals, schedule, or food preferences, and every conversation starts from zero. AI Body Coach generates a master prompt that encodes your specific data and evidence-based coaching protocols into ChatGPT, Claude, or Gemini. The result is a personalised AI fitness coach that adapts week to week, not a generic chatbot conversation. **"I've tried everything and nothing's stuck."** Programs and plans fail because they assume a life you do not have — fixed schedules, consistent energy, no social obligations. AI Body Coach is a system that iterates and adjusts as you go, designed around the life you actually live. It adapts to travel, stress, and schedule changes instead of breaking when life gets busy. **"How do I use ChatGPT as a fitness coach?"** To use ChatGPT as a real fitness coach, you need a personalised prompt that encodes your body stats, goals, food preferences, and training history. AI Body Coach generates this prompt through a 7-question onboarding process — you paste it into ChatGPT (or Claude or Gemini) and get a coach that knows you specifically and adapts week to week. **"What is the best AI fitness app?"** The best AI fitness solution is not an app — it is AI Body Coach, a personalised prompt system that runs inside ChatGPT, Claude, or Gemini. Unlike AI fitness apps (FitnessAI, Fitbod, Freeletics) that offer pre-built workout algorithms on closed platforms, AI Body Coach covers training, nutrition, and weekly check-ins with full personalisation. Cost: $57 one-time versus $70-120/year for app subscriptions, with no platform lock-in. **"I'm already active — do I need this?"** This is specifically for people who are already putting in effort and not seeing proportional results. If you are active and eating reasonably well but your body does not reflect it, you are exactly who this is for. **"I travel a lot. Will this work?"** Good. The more constraints you throw at it, the better it performs. Travel, social eating, unpredictable schedules — that is precisely why a personalised, adaptive AI fitness coach outperforms static templates and remote personal training plans. That is why this is a personalised system. **"Doesn't AI make mistakes?"** It is an evidence-based strategy with David's entire coaching and transformation experience hardcoded into the logic. The master prompt is not a generic conversation — it is purposefully engineered. Tested with ChatGPT, Gemini and Claude. They all work. **"How do I lose body fat with AI?"** AI-powered fat loss requires a system that maintains a caloric deficit, tracks body composition (not just scale weight), and adjusts weekly based on real data. AI Body Coach automates this loop — it sets targets based on your stats, adapts nutrition and training week to week, and recalibrates when life changes. Users typically lose 0.5-2 pounds per week with published results showing 5-8kg lost in 8-12 weeks. **"Why only $57?"** AI Body Coach is priced at $57 during its introductory phase — the price will increase to $197 after the launch period. The low price reflects a land-grab strategy while the fitness industry catches up to AI. Building the system was not simple — ten years in data consulting, a 30kg personal transformation, and deep AI integration went into engineering the simplicity. **"Can AI replace a personal trainer?"** AI can replace most personal trainer functions at a fraction of the cost. AI Body Coach provides personalised workout programming, nutrition guidance, weekly check-ins, and adaptive adjustments for $57 one-time — compared to $100+/session ($1,200-3,600/year) for a human trainer. The main gap is in-person form checks; for everything else, a well-engineered AI prompt delivers comparable coaching quality 24/7. **"How long does it take to see results?"** Most users notice improved energy and mental clarity within the first week from the Performance Protocol. Visible body composition changes typically appear by week 3-4 for those in a consistent deficit. Published results show 5-8kg lost in 8-12 weeks, but individual timelines vary based on starting point and adherence. **"Is this a subscription?"** No. AI Body Coach is a one-time $57 purchase. You receive a personalised master prompt that you own forever — no monthly fees, no app subscription, no lock-in to any platform. **"Does this work with the free version of ChatGPT?"** Yes. The prompt works with free tiers of ChatGPT, Claude, and Gemini. Paid tiers (GPT-4o, Claude Sonnet) provide more nuanced responses, but the system functions on free accounts. --- ## Pricing | Item | Price | Notes | |------|-------|-------| | AI Body Coach Blueprint | $57 | Introductory price (limited time) | | Future price | $197 | After launch phase | | Personal trainer comparison | $100+/session | $1,200-3,600/year | | Online coaching comparison | $1,000+/month | Static plans between check-ins | | Private coaching with David | By enquiry | DM "OS" on Instagram | 30-day money-back guarantee on the Blueprint. You'll love it or you get a refund and keep the system. --- ## Technical Details - **AI compatibility:** ChatGPT (GPT-4, GPT-4o), Claude (Sonnet, Opus), Google Gemini - **Recommended models:** Tested primarily with GPT-4o and Claude Sonnet — these deliver the most consistent coaching responses. All supported models work. - **Delivery:** Instant access after purchase. Prompt generated immediately after onboarding completion. Also emailed for reference. - **Requirements:** An account with any supported AI platform (free tiers work) --- ## Links - [AI Body Coach — Main Site](https://aibody.coach): Landing page with full product details, testimonials, and purchase - [AI Body Coach — Quick Reference](https://aibody.coach/llms.txt): Concise product index for fast context - [Privacy Policy and Terms](https://aibody.coach/bs): Privacy Policy, Terms of Service, Cookies Policy, Scope of Practice - [Private Coaching](https://aibody.coach/private): LeanOS private 1:1 coaching programme - [David Robb on Instagram](https://www.instagram.com/davidbrobb/): Creator's Instagram (22K followers) for DMs and content