I actually just got asked the worst ? possible today at my shop. Guy comes in and is gonna go on a pro hormone cycle and asks if he can do cardio. I say of course you can, its recommened. he says ok good b/c a long time ago I did a cycle of steroids and the guy who sold them to me said the heart is a muscle like all other muscles and to not do cardio or you can blow it out. LMAO