The most effective type of exercise for building muscle strength is resistance training. This includes practices such as weightlifting, bodyweight exercises, and resistance bands. Resistance training targets muscle groups by creating tension through various movements, which in turn stimulates muscle growth and strength development. Consistent application of progressively heavier loads is essential for promoting optimal muscle adaptation. Combining resistance training with adequate nutrition, particularly protein intake, enhances muscle recovery and growth, making it a paramount approach for those seeking to increase strength and overall physical performance.