To improve muscle strength, resistance training is the most effective type of training. This can involve various forms, such as weightlifting, bodyweight exercises, or employing resistance bands. The key principle is to challenge muscles by progressively increasing the load or intensity over time. Engaging in different training modalities, including compound exercises (like squats and deadlifts) and isolation movements (like bicep curls), helps target various muscle groups. Consistency and proper form are crucial for maximizing strength gains while minimizing injury risk.