What I mean is, having a weighted back pack on your back while you squat. I guess I'm wondering if there was any other way, because when I was squating with the bag, I felt my form was really being pulled off because all of the weight wasn't coming down on me, forcing me to lift up...but alot of it was pulling me backwards, which made it somewhat awkward. It was hard to do, more than it should have been, and I don't think I got as good of a workout as I should have. Is there anything to do with bag squats so it's not pulling you backwards? Any position of the bag or anything?