I have been working off of a Killroy70 template and I am at the point where I am doing L-Seat Pullups. I can do sets of 8-9 legs at 90 and locked out but there is pain in my lower mid back when I pull up. Is this just normal muscle strain ?
I have been doing deadlifts at a moderate weight ~200lbs. as a lower body and back conditioning exercise as well as weighted pullups (I am not doing them on circuits like crossfit). Does this counteract anything training wise in BtGB? Is it bad to do both?