| Hi Barb,
I am a big fan of pilates and yoga. Pilates can be done at home, with a mat (I once even used a lawn chair cushion) and it is great for back pain. There is actually a Pilates for Idiots video tape (yes, this is the one I did using the lawn chair cushion). Yoga is also great, low impact, good for back pain and can be done at home. There must be a million different Video's websites and classes for both Pilates and Yoga. You should definietely be able to find a method that suits you perfectly. Happy hunting.
Oh, btw, I do yoga in the morning and at night before bed. I am not diabetic, but at night I do a very "low key" yoga session so that I can easily drift into a blissful sleep (well, sometimes it works).
Lee | 
