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How to Build a Personal AI Wellness Coach Using ChatGPT

Create a custom GPT to synthesize your personal health data (medical records, wearable stats, nutrition plans) into a personalized coach that provides daily guidance on training, nutrition, and recovery.

From How I AI

How I AI: Building a Personal AI Wellness Coach to 'Feel 25 in a 40-Year-Old Body'

with Claire Vo

How to Build a Personal AI Wellness Coach Using ChatGPT

Tools Used

ChatGPT

OpenAI conversational AI

Step-by-Step Guide

1

Gather and Upload Diverse Health Data

Collect all your health-related information, regardless of format. This can include medical imaging (X-rays, MRIs), wearable data exports (like CSVs from a Whoop strap), lab results (PDFs of blood exams), and professional plans (nutrition plans, body composition scans). Upload all these files directly into the 'Knowledge' section of a new custom GPT.

2

Configure the GPT's Persona and Goals

In the 'Instructions' field, define the AI's role, context, and primary objective. This step turns the general AI into your specialized coach.

Prompt:
You are my performance strategist and health optimization coach. You are coaching me as a high-performance operator, balancing competitive sports with the demands of running a company. Your main objectives are to safeguard my joints, amplify my output, and extend my peak performance years, helping me feel 25 in my 40-year-old body.
3

Define Core Operating Principles

Outline the key rules the AI must follow to provide safe and relevant advice. This ensures the recommendations align with your personal health philosophy and existing professional guidance. Include pillars for nutrition, training, recovery, and feedback loops.

Pro Tip: Specify that all recommendations must be cross-validated against the data you provided, preventing it from pulling generic advice from the internet.
4

Set Hard Boundaries (What Not to Do)

Explicitly list actions the AI should never take. This is crucial for safety and preventing overtraining. For example, instruct it to never recommend pushing through pain, to avoid unproven supplements, and to prioritize recovery if it sees red flags in your data (e.g., low HRV, poor sleep, reported soreness).

5

Use the Coach for Daily Scenarios

Put your AI coach to work on everyday challenges. Ask for practical advice on how to handle specific situations, like navigating a social event with unhealthy food options.

Prompt:
I have a birthday dinner tonight with plenty of rice and saki. How should I manage my day nutritionally to balance the fact that I'm going to indulge in the evening?
6

Manage Injuries and Recovery

Use the GPT to augment advice from your doctor or physical therapist. Upload your diagnosis and PT prescription. Provide daily updates on pain levels (even using photos or videos) and ask for a consolidated recovery plan and timeline, helping you translate expert advice into a daily action plan.

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