Muscle building in sports refers to the process by which muscle mass is increased through targeted training. This process, also called hypertrophy, occurs when muscle fibers become thicker and stronger in response to repeated stress (e.g., through strength training). Along with an overall increase in performance, it is likely this motivation that drives them to train regularly. Building muscle is an ongoing process that requires time, discipline, and a combination of proper training, nutrition, and recovery. The building blocks for your muscle growth include essential amino acids (EAAs), which are crucial for muscle growth.