One thing I've discovered is that my core is really weak!

30 crunches last weekend, and I could hardly move most of this week. Yikes!

That is something I need to work on.



However, since I started this thread, I went to my chiro and felt better for a while, but it has gotten worse again. I am thinking that chiro + core work might be the key.

Also, one thing my chiro said is that the location of my pain often occurs when leaning forward. So it may not necessarily be triggered by the backpack itself, but by the fact that when I wear the backpack, I'm leaning forward to compensate, especially when walking up the hills between uni and work. I have noticed that straightening up -- almost feeling like I'm leaning back -- helps.

And of course, on a bicycle, I'm leaning forward.