MindFulness is a full-stack fitness platform designed for managing and attending fitness classes. Built with the MERN stack (MongoDB, Express.js, React, Node.js), the platform supports three user roles: Admin, Instructor, and Student. Students can browse available fitness classes, book slots, and make payments using Stripe. Instructors can create and manage their own classes, while Admins can approve or deny classes, manage users, and oversee platform activity. The app includes Firebase authentication, protected routes, and a responsive UI. It is hosted on Firebase with secure and scalable backend architecture.