“Muscle hypertrophy” refers to the increase in muscle size that occurs as a result of resistance training. Specifically, it involves the enlargement of muscle fibers due to repeated mechanical tension and metabolic stress during exercise. Muscle hypertrophy is typically achieved through structured strength training programs that focus on progressive overload, where muscles are exposed to gradually increasing resistance. This process not only improves physical appearance but also enhances overall strength, endurance, and metabolism, contributing to better performance in various physical activities and potentially supporting fat loss.