Q.My 84-year-old wife is slowing down and seems to be more forgetful. During an appointment, our doctor talked about things she needs, including incorporating regularly scheduled exercise that he said might also help memory. The doctor said he was referencing new research that ties exercise and memory issues. I'm all for it; I'm tired each day after doing most of the housework that my wife seems to forget. It would be great if she could incorporate some of that activity back into her daily routine. She insists that additional physical activity "is no cure for old-age memory loss."