Pilates always hurts my neck and back. I've done it many times and finally stopped. Yoga never does. There's a little "thing" between those who do Pilates and yoga at my gym, like Pilates is tougher. Then there's Centergy, which is basically yoga turned into athletics, with no breathing or spiritual aspect. I actually like that class. No matter which class or instructor i try (and they are all Stott certified instructors), I just can't do the Pilates without feeling like it's hurting my body instead of helping it.