The article didn't say what made heart disease worse, but I know the heart is a muscle, so it seems to me that it should be exercised to keep healthy. I read about muscle wasting in the elderly who sit around, so that may be a factor. I think old bodies eventually wear out and die regardless of how hard you work at it. But I don't feel ready for that eventuality yet. I can't get the weight to budge, either, but at least I don't have a problem with gaining if I stay active. I don't need as many calories each day, and I eat slowly and chew a lot. If I ever get it figured out, I will let you know. Ha Ha! When I was first married, I was dizzy if I stood up fast after getting a pan out of the lower cupboard. I must have been in really poor condition because of an inactive life. That soon changed on the farm where I worked myself too hard, had allergies, and worried my self terribly over financial debt. Those days are over for me now, and I concentrate on peace and happiness doing the things I enjoy first and the jobs I don't like eventually when I get around to it. Dorisena