The book discusses the challenges newcomers face in fitness, emphasizing the importance of personalized feedback due to the complexity of mastering techniques and the risk of injury. It highlights the potential of recent advancements in deep learning and vast datasets in various industries but notes their underutilization in sports, fitness, and injury rehabilitation. The text introduces a book that explores the integration of human pose estimation technology with fitness training, driven by meticulous research and a commitment to progress. It outlines the development of a feedback system aimed at revolutionizing the fitness landscape and invites readers on a journey of discovery and innovation. The text envisions a future where technology and tradition combine to optimize fitness outcomes and revolutionize workout feedback.