regarding special k , the officials said kellogg 's misrepresented the cereal 's benefit by saying those who eat it can `` keep the muscle , lose the fat. '' they said such representation failed to disclose that `` for the vast majority of consumers and even for those on a diet , eating one serving of special k would have virtually no effect on preventing the loss of muscle as the majority of dieters are in no danger of losing muscle , and for those who are , a serving of special k would be insignificant ... ''