i have heard many ppl debate the topic, some agree some disagree; my personal experience is my first cycle i was using dbol &
test & deca & i stuck some
sus in there. i'm not very flexible and i did a 16week cycle, @ the time i was too much of a pussy to stick in my leg(which is my fav spot now) but long story short all but maybe 5 injections where in my right glute(the 5 where in my shoulder when i could get a friend over) & a did at least 2shots a week, other than having a sore right ass check @ the time i experieced nothing out of the ordinary.
And my right glute isn't any bigger then my left glute.
not trying to start a debate, just my experience.
hope it helps