RegimenAI — AI Health Platform

Generic fitness plans ignore the fact that user progress isn't linear. RegimenAI is an AI-powered fitness platform generating personalized workout and nutrition plans based on a user's goals, history, and progress, built around a feedback loop rather than a one-time generation step — plans adapt based on what a user actually completes and reports back, moving beyond static, one-size-fits-all templates.

What I Built

• Personalization engine generating recommendations from goals, history, and constraints
• Progress tracking that logs activity and adapts plans over time
• LLM-assisted plan generation for both workouts and meal plans
• Feedback loop where plans adjust based on completion rates and explicit user feedback

Tech Stack

• Backend: Python, FastAPI
• AI: LLM-based plan generation
• Database: PostgreSQL
• Frontend: React

Key Decisions

• Built a feedback loop where plans adapt based on completion rates and explicit user input, rather than a one-time generation step, since static plans ignore the reality that user progress isn't linear
• Used FastAPI for the backend to keep the personalization and plan-generation endpoints fast and typed, appropriate for a service making frequent small requests as users log progress

Outcome / Impact

Delivered a platform that produces genuinely personalized fitness plans that evolve with the user, rather than static templates handed out once and forgotten.