Englebardt, a medical writer, has been studying cardiovascular reconditioning centers in other countries, primarily West Germany (there are none here). These programs strike him as a good idea, and he's patterned a regimen for you to follow -- after you've had a physical check-up and especially if you've been diagnosed as ""premorbid"" or have already had a heart attack. Much of this, though, you'll already be familiar with, such as the need to substitute more mono-unsaturated and polyunsaturated fats, the wisdom of giving up cigarettes (his tapering-off therapy sounds as though it could work), frequent exercise (unlike others, Englebardt has no reservations about jogging) and learning to minimize tension (there's a lengthy discussion of Type A Behavior). And for those who need to lose weight, he recommends Duke University's Dr. Siegfried Heyden's Workingman's Diet -- 700 calories, two and a half fasting days each week. It's the kind of asceticism that may be good for the soul of course, but for the heart. . . we're not so sure.