Hi Freida and welcome back to SP. I did the same thing, joined, dropped off and I've been back again (and successful!) since July 26, 2012. I use SP mainly to track my weight and document my food intake each day. It's only been in the last few months that I've started posting/responding.
I've been so heavy that any kind of exercise has been difficult for me. Add to that a hip replacement and bad feet and even simplly walking becomes a painful prospect.
I finally purchased a recumbent bike. I don't know if this is a good idea for you, but one of the advantages to it is that it has a chair-like sear (not a bike seat), so perhaps your back could tolerate it.
My niece is a licensed athletic trainer and told me just today that she recommends recumbent bikes to her clients who are just starting out after being too sedentary for a long time (like me!). I appreciated that I'd "accidently" gotten the right piece of equipment. LOL
Good luck on your journey to good health! I look forward to hearing from you!
| current weight: 189.8