Why deficits matter - The problem with one more steak

Should an overweight man, with elevated cholesterol, eat a 32-ounch steak? Probably not, you might say. Provided he stays comfortably seated in his chair, no short-term problems may ensue. However, in the long run, it is clearly risky and, even in the short run, some obviously negative effects are being masked by the fact that he is sitting, rather than engaging in vigorous exercise.