Dr. Peter J. Steincrohn of Hartford, Conn, wrote You Don't Have to Exercise to prove that exercise after 40 is definitely harmful; his rule for fitness from then on is to stay thin and lazy. His latest book, Heart Disease Is Curable (Doubleday, Doran; $1.98), out last week, goes on to show what avoidance of exercise can do for heart disease.
The Patients. "Heart disease," he says, "does not necessarily mean doom." He gives examples:
> "Three years ago I treated a 70-year-old man whose family had resigned themselves to the seemingly inevitable outcome. His wife stood by his bedside, holding his hand...