Well yesterday while I was training back I wanted to check my 1RM on my deads, which I haven't done in a while. I guess I may have put on way to much weight but I performed it anyways. Last time I checked my 1RM was about 420 pounds which was 2 months ago, so I tried to go for 500. I performed it, however with shitty form, i think I may have arched my back a bit. Right after that rep I felt very light headed seeing stars & shit, so i put the weight down & decided to go home. While I got home my lower back was killing me & it was practically impossible to turn, slouch or even touch my touch my knees when standing. I went to sleep hoping it would subside, however i just woke up & my back is still killing me. I rolled out of bed in agony. & now I'm on the computer chair right now & I'm sitting as straight as possible, because if I were to slouch I would start to feel alot of pain.
What may have happened?
What may have happened?