Jim Fixx...my work is done here.
To 5 - Witty post, though he was an anomaly.
Yeah, he ran more than Forest Gump and died in his forties. He was a vegetarian too if I remember correctly. When they opened him up, they said his arteries were as clear as a newborn's.
I'm always amused when I hear being sedentary is acceptable behavior from a health point of view.
Walking is better than sitting, running is better than walking if possible to do.
Check out Jim Fixx background and you will probably decide he would have died even earlier had he not been a runner. As it is he outlived his father by nine years before dying of the same hereditary heart problem. The fact that he ran a lot and also died young in no way proves that running CAUSED his early death. In all probability it gave him a little more time than he would otherwise have had and at the least gave him mobility and energy in his last years when he otherwise was headed toward being a blob before taking up running.