FIT.IA: AI Powered Workout & Nutrition Assistant

Integrated system leveraging generative AI to structure personalized diets and workout plans through an intuitive user interface.

My RoleFull Stack Developer (Node.js/Express backend API and React frontend interface).

StackNode.js · Express · React · Generative AI · Tailwind CSS

Engineering focused on clean architecture, resilience, and measurable performance.

Architecture & System Flow

The problem

Fitness enthusiasts often struggle to create and adapt workout and nutritional plans tailored to their specific fitness goals in an accessible manner.

Engineer consistent prompt structures and sanitize LLM outputs to guarantee predictable, typed data schemas for the frontend.

Decisions

Schema Validation & Sanitization

Strict validation of model output payloads before returning data to the client, preventing UI layout breaks from malformed responses.

Tradeoff: Additional retry overhead if response violates expected schema.

Strict Client Server Decoupling

Express backend encapsulates API keys and prompt engineering logic, isolated from client side visibility.

Tradeoff: Need to manage asynchronous network latency states in the UI.

Outcome

Complete application delivering automated, personalized workout routines and nutritional guidance based on individual profiles and goals.