Ok so i went to the gym tonight and did back/tri's...after i did 3 sets of wide grip pull ups, i went to do wide grip barbell rows...now i have been doing rows since high school i have perfected my form, 3 sets in my lower back is tight as hell!!! Now i have some friends that are running the same cycle and gear as me and recommend i take calcium and taurine...again its not my form cause i know its not my form!!! i think i got such a massive pump that it put a lot of pressure on my spine..any recommendations would be great, thanks.