mass fluctuation is a hard ass way to do it there oprea,you dont want to fatten up then turn fat into muslce because you are using a weak base to build from. you want to decrease the fat in size so you have a better build and a much stronger in the long run.
hears what happens when you put muslce on top of fat, you bulk up a little bit,looks bigger cause of the size in general, but when you stop working out, the muscle softens up and you will just have doubled your soft muscle, and it will be harder to regain that strength all over again.