It is difficult to exercise when you are ill. I suffered a serious illness a little over a year ago, and exercise was one of the key components of my recovery. I literally started in my bed, on my back, with just pointing and flexing my toes and lifting my arms. When I was able to get up, I begin to walk. At first, I could only walk a few steps, and then I begin to build on it. I finally made it outdoors and went from half a block to going aroun the block. The exercise I did, including walking, I always did deep breathing with it and it relaxed me and gave me energy, all at the same time. I read in a helath book that exercise aerates the body like fresh air does a wet towel, and I let that vision encourage me. Exercise really did help me heal and become stronger. It isn't easy but it is so worth it.