I have been training for approx. 1 1/2yrs. And in that time I have managed to drop my bf% from 15% to 10% and up my weight from 170lbs to 195lbs(clean). I still have alot to figure out on how my body reacts to certain things. But in the last 4-5months. I have not been able to change. I have hit a plateau. My main concern is my chest(big problem area). I recently trained with someone who got me to do a whole chest excersice on cables. I was always inder the inpression that cables were great for shaping more than bulking and to put on size the bench is where i should be. But for the last three weeks I have been trying these cable exsercises for chest. And have been getting incredible pumps, and have noticed a slight increase in size and defenition. Could this be do to the fact that I am shocking the muscles or maybe my chest reacts better to cable excersises?