Thank you for the link. I have a twin sister, who has not lost 'height' as I have. I have always enjoyed cycling as my choice of exercise. My twin has enjoyed jogging and does some light weight lifting at home. When I saw her a couple of weeks ago, she was definitely 'taller' than me . I have always been shorter than her, but I was noticeably at least an inch shorter. I am 54, in menopause and know that I have gotten shorter. I am afraid to get a bone density test, but I think I probably should. It concerns me. I know my mom, before she died, lost a lot of height as she got older. I am 4'10" (I hope) and I know she was probably only 4'6". I tend to do more walking in the winter when I walk to the bus stops but I don't think I do enough. Maybe I should try to 'jog', but I always suffer from shin splints....