Quoted from Gnatty:
Give it a few more years, your back will be messed up for the rest of your life
I can attest to that. 40 plus years ago I was in great shape. Moved machines with the best of them. First back injury the doctor prescribed valium to get me on my feet. I could lift anything then. In my 30's it felt like a butcher knife was stuck in my back. Back pain seems to go away after 12 years or so.
Now my knees don't work good, my back is in pieces, and I sleep a couple hours or so at a time.
LTG : )