Shape up with weightlifting
Just as establishing a proper weightlifting schedule is important to gaining muscle mass quickly, it is equally important to be in good shape when lifting weights. Alternatively, you can develop good technique by learning the correct way to do weight-specific exercises online or in books and other training aids.
Maintaining proper form throughout the exercise helps isolate the target muscle group and loads the muscle tissue to a level that encourages muscle growth, but not to a level that damages the muscle. Remember, you need to tone your muscles to build a . Unlike weight training, where the only desired result is toning, if your goal is to build muscle quickly, you literally have to wear yourself out. On your rep, you'll find yourself reaching a point of fatigue where you can't maintain proper form.
So your weight will form properly and add more weight to your workout. It indicates that it is time to add.
Your level of difficulty in maintaining proper form indicates whether you're loading your muscles at the optimal level to quickly reach your muscle-building goals.