Developed FitCore, a full-stack fitness and nutrition web application using Next.js, integrated with WebSocket for real-time communication with IoT smartwatches. Enabled users to scan meals and automatically retrieve nutritional data, including carbs, proteins, and calories. Implemented real-time health tracking, monitoring BPM, steps, and other metrics from IoT devices. Provided personalized workout recommendations and goal tracking based on user fitness data. Designed a responsive and interactive UI while ensuring seamless data flow between frontend, backend, and IoT devices.