By using good and proper form, the risk of injury is lowered. A lack of proper form commonly results in injury or a lack of effect from the exercise being performed
Good form ensures that the movement only uses the main muscles, and avoids recruitingsecondary muscles. As a muscle fatigues, the body attempts to compensate by recruiting other muscle groups and transferring forcegeneration to non-fatigued units. This reduces the benefits in strength or size gain experienced by the muscles as they are not worked to failure.