I've mastered the SL and I've noticed recently that when I do it, I'm more comfortable when my torso is turned towards the ceiling and my back is towards the floor. Previously I was more perpendicular, where my lats were facing the floor and ceiling. I'm attributing this to increased shoulder flexibility, but I don't really know. Is this OK?
Also, when an exercise is mastered, should I keep doing the full 5 sets with each workout? I feel pretty drained at the end of SL and RC and I'm wondering if that extra energy is better spent on exercises I haven't mastered.
Thanks.