Lainabaina, have you tried Cathe's Stretch Max series? There are three of them and the one that uses the resistance band is my favorite. I've been prone to back and hip injuries going all the way back to the late 80's and the original Firm, and I have to say that now, on those rare occasions when I sense something's about to "pop", I do a Stretch Max and I am as good as new. All of Cathe's workouts that I've done also seem to have something built into them that prevents injury. Not sure what it is, but I always feel so physically balanced after I do one of her workouts, and it doesn't really seem to matter which one. Kudos, Cathe!