I'ts not that I don't trust my exercise person, but after 30 minutes of spin, we go to weights and ab work . I've been doing this 3-week since last November and beginning to see some upper arm definition. Im starting to have chronic left neck and shoulder blade pain from doing a forward extension from thigh to chest, keeping elbow slightly bent. and then a side extension from thigh to chest level. It starts to hurt--I stop for a week. I do less reps--still hurts---I stop---I go less reps/lighter weights--still bad---I stop---now Im down to one rep and alternating with resistance bands still got trouble. Deep tissue massage takes care of it--but I'm spinning my wheels here. I really think it has something to do with form but Im not getting any help from the teacher. Can you suggest alternate exercises maybe using the body bars--i have acess to weights ranging from 12-34 lbs. Thanks