You'd think I'd be blinded by that light, but my vision is still as good as the day I was born :)

Lucky you. I am on the other end. :(

Speaking of exercise: I never was doing sports for the sake of doing sports. In fact, detested it. Though I liked dancing and now, that I dance no longer, I switched to household-work. Bending and stretching on purpose in order to keep me fluid, crawling under desks and in corners when vacuum cleaning, kneading heavy dough by hand, carrying groceries instead of weal them around, taking steps instead of elevators (well, that I need doing more) and so on:)

So, I am with you, here :D - all the best for your back.