Hearing loss and back problems. I never throught I could read up so much on ear plugs, tinnitus and suicide when I decided to play bass four years ago. Now I wear ER20's for louder practices and gigs. I wish I did from the beginning! my volume urges got the best of me many times. Now, my back is suffering from too much shuffling of my gear around. granted my gear is lighter than most it seams. 44 Lbs for my cab, about 30 Lbs for my rack and 10 LB for my guitar. I moved my complete "rig" EIGHT times this week because I had got my new cab into the house (trip 1) and wanted to show a friend (2,3), haul it to church to play (4), haul it to an aguilar dealer to a/b cabs (5,6,7), back to church (8). saturday night after church I got home and could barely walk, stand up straight OR SLEEP!!! I was icing my back and popin' advil like I had an endless supply. Today I saw a chiropractor for the first time in my life! I'm 36. What a weird experience! I thought she was gonna kill me!, but I'm starting to feel better. pinched nerves are feeling better. two more visits and a muscle therapist coming up. Now, this isn't all because of bass gear, but that was the last straw. I also had other contributing factors: possible effects from teenage back injury (not treated at the time), 4th of july back injury this year. whacked my tailbone falling off a jetski. I did some heavy lifting at work after 4th of july and before that. then the cab. and basic slouching posture reading and posting at TB! please take care of yourselves and be careful lifting your big cabs and racks!!!!