Progression is an important training principle for several reasons. First, starting slowly and learning the proper techniques involved in progressive resistance training (PRT) are important for reducing injuries. Second, progressing slowly can prevent extreme soreness in beginners when they do too much too soon. Finally, progressing slowly will enable the supporting structures of your muscles (bones, ligaments, tendons) to adapt to the overload placed on them during training. As the saying goes, "Anything worth doing is worth doing right." So, make sure you apply the principle of progression to ensure a safe and enjoyable PRT experience.