dont know your exact situation but maybe if you can find a good swimming hole, lake or pool, and swim at your own pace its one of the best way to try and get back into shape at your own rate. seems a shame to give up bike so quick after all you went though to get the one you wanted. im dealing with my own demons right now trying too raise funds for a new tractor or lawn mower to take the weeds on about 20 acres of my property., right now I'm slowly chipping away every day or so at some with weed eaters. a life changing accident back in October broke my neck, but I still try to get out and do some shooting with light loads and swing the weed eater a little bit. I figure if I give up trying it will all go downhill real fast. a good swimming hole is about the only thing I miss about living where I do.