Those who actively engage in strength training primarily aim to achieve two things: building strength and mass. The secret lies in progression, which means constantly increasing and varying the load. This is the foundation of the program developed by training legend Charles Poliquin in the 1990s, which laid the groundwork for his fame. The book published by the Poliquin Group explains the fundamental principles of strength training and how to apply them correctly. It presents the methods that bodybuilders and bodybuilding coaches actually use in practice. Additionally, it addresses details such as the optimal speed of repetitions and rest lengths, revealing how crucial these factors can be for progress. Throughout, the latest findings from sports science, training theory, and nutrition science are taken into account.