Thanks everyone for the suggestions. I was just wondering when you all felt like it was safe to start exercising. Do you wait for the pain to be nearly gone or do you begin exercising with the pain. He is two months post-injury and it still feels like "a soldering iron in my back." It is somewhat better than immediately post-injury, but is still rather severe and barely tolerable. His job demands a lot of him too so the last thing he wants is the pain to get worse.