Toggling between bulk and cut protocols is actually the best, imo. There is such a thing as "priming" the body for growth. Getting lean, performing fasts, cardio and using various supps can do this. Basically, the leaner u are, the better response u have to getting big in a lean fashion. Therefore, toggling between 2-3 months of bulking and 1-2 months of cutting is an alternative to just constant bulking.