Muscle development refers to the process of increasing muscle mass and strength through various forms of exercise, particularly resistance training. This process involves the breakdown of muscle fibers during workouts, which then repair and grow back stronger during recovery. Key factors influencing muscle development include the type of exercise, nutrition, and rest. To effectively promote muscle development, individuals often engage in activities like weightlifting or bodyweight exercises. Adequate protein intake is essential for muscle repair, while rest days allow the body to recover. Consistency in training and proper technique are crucial for achieving desired results in muscle growth.