I'm in rehab at the moment for an injury, but it means I get to do upperbody gym work everyday. Only done two weeks so far but my arms have come back already and quads are massive from tabbing. Still need to work on my traps, hamstrings and lower back though. Especially my lower back, it's shit!
If anyone's got any advice on how to train my lower back without using my legs i.e deadlifting etc let me know.