The document describes an Android application called Exercise Challenge that functions as a personal 3D trainer to guide users through various exercises via video, audio, and text. The application aims to make exercise accessible to everyone by providing customized workout plans, scheduling features, and BMI calculations. It uses tools like Eclipse Mars and Adobe Photoshop to design the user interface and 3D animated trainer. The goal is to help users achieve fitness goals like weight loss or muscle building through personalized exercise routines and tracking progress.