I had an accident, about 8 years ago. Net result 2 vertebrae with compression fractures, and L4 I damaged the discs above and below. So yes I have a bad back, and it cannot be cured. As far as standing up goes, I can manage a shower, a shave and clean my teeth, that's it I have to sit down. I used to enjoy walking, cycle rides, not anymore. The only exercise I can do is swimming, where there is no load on my back. Unfortunately I don't have my own swimming pool ! I think saying exercise is good for you is nothing new, but sometimes there are other factors to consider.