Good Form

I cannot tell you how many times I see people in the gym with terrible form. Make sure that you isolate the targeted body part that you are exercising, making sure that your concentric and ecentric movements are slow and controlled,which means movements to and away from the body. When you swing the weights, not only are you incorporating other body parts but you are also using momentum. Yor muscles will respond and change a lot quicker when you isolate them and use slow controlled form. If you have to swing the weights or use another body part, you are more than likley using wieght that is too heavy for you!