lower back pain

Hey everyone! Former powerlifted here. Took an unfortunate, unavoidable two-year break from weight lifting. Started again, slowly, a little over a week ago. (By "slowly" I mean that I'm taking it easy on weight. Not trying to really push the envelope yet until I get my body used to the unique...

Im 17 yrs old and i have just started madcow's 5x5 program. For some reason every time i do squats i get some lower back pain. It is strange because i only get it when i set the weight back on the rack. It is a sharp pain in my lower back on the right side usually. It hurts for the rest of the...