Change
When it comes to adding new exercises to your program you should be excited and try many different ones. You will begin to see that your body will respond great to a different type of stimulus. This is how you will keep your muscles guessing and growing. By not giving your body the chance to adapt and get used to a certain kind of exercise you will be doing different exercises every month. You need consistancy also. Try things like fast dumbbell workouts to mix it up. It should crank up the intensity and help your progress and your results.