Three years ago, the last time Jerry Robinson bagged a buck, he dragged the carcass a mile. Now 70, Robinson, who stands 5-foot-11 and weighs 190, is still in the kind of good health you'd expect from a guy who's led an outdoors life. He has never smoked and boasts the sort of blood pressure seen in athletes. He hikes, fishes, and has no symptoms of cardiovascular problems and no history of heart disease.Given all of this, you'd imagine Robinson's cholesterol--that much publicized villain in heart-health campaigns--would be exemplary. Not so.