Cutting and bulking is all to do with diet. The difference between the drugs are that some drugs tend to make people hold more water than others. So really, you can cut on bulking drugs, if you so desired. I would suggest that if you are trying to add mass, that you focus on that through the whole cycle and if you are getting overly fat, I would suggest that you adjust the diet to stay leaner while still adding muscle. There is a lot more to say about this, so I am passing this question on to the guys at Advices Radio, advicesradio.com or on iTunes. They will discuess this topic on episode 11, coming out the week after this one