The most effective type of exercise for building muscle is resistance training, which involves exercises using weights or body resistance. This method stimulates muscle growth through mechanical tension, muscle damage, and metabolic stress. Effective resistance training includes exercises such as squats, deadlifts, and bench presses, which target multiple muscle groups. To maximize muscle gain, it’s essential to gradually increase the weight and maintain proper form. Additionally, balancing resistance training with adequate nutrition, including sufficient protein intake, supports optimal muscle development.