One of the side effects of corticosteroids is muscle wasting. That is a medical fact. They are similar to the hormone cortisol. Fat gain is another side effect. In other words, BAD for bodybuilders.
Yeah but I'm just coming off of major pec surgery (I had it done in May). I still have alot of inflammation. I am taking Prednisone for 6 days and I am also using this method (the one I linked the website to) for 4 days. So it's very short term I doubt I will see any muscle wasting or any fat gain in that time.