Bodybuilding focuses on building muscle mass, increasing strength and improving endurance through regular training and a balanced diet. This sport, which has become very popular in the last few decades, is not only a physical activity but also a lifestyle that promotes health, aesthetics and mental discipline. At a time when more and more attention is paid to physical fitness and health, bodybuilding stands out as an efficient way to achieve these goals. The basic theoretical principles of bodybuilding include knowledge of the physiology of muscle development, which is essential for creating a training program. The body reacts to various types of load, and appropriate stimulation can result in muscle hypertrophy. The principles of training for hypertrophy are the basis of effective training programs, and knowing them enables optimal results. Nutrition is key in bodybuilding, supporting muscle growth, improving recovery and overall health. The role of nutritional strategies and supplements will be analyzed, with an emphasis on their impact on performance and results. In addition to the physical aspects, bodybuilding has a positive effect on mental health, improving self-confidence and reducing stress. Furthermore, bodybuilding offers a variety of career opportunities, from competitive sports to coaching and healthy lifestyle promotion. This paper will provide an insight into bodybuilding as a complex and useful activity that can significantly contribute to the physical and mental development of an individual.