A bit off topic, but have you tried yoga to help your back problem? I've thrown my back out a couple of times and am in the process of integrating yoga into my daily routine, want to know how well it works (if it works).
Not OP, but while I've had a lot of success, the evidence doesn't support blanket application of 'Yoga' to back pain. The real problem is that back pain typically goes away regardless of treatment modality, which leads to a lot of people who grab the last thing they tried as "the real thing that fixed my back".
yeah, I realize it's not going to cure back pain, I just want it to improve my musculature. I think I keep pulling things because I'm at a computer all day and don't do a lot of movements/stretches.