The physical fitness required to perform complex athletic feats has a parallel in the intellectual fitness it takes to perform complex mental tasks. At the heart of liberal education sits the idea that moderate training in several disciplines is better than intensive training in just one. Through exercising students' abilities in interpreting cultural artifacts; gathering and analyzing evidence; communicating; reasoning logically, historically, and morally; and so on, liberal education promises an intellectual fitness that exceeds the sum of its parts. This model of education is faltering under heavy pressure, however, as colleges and universities adapt their undergraduate curricula to accommodate students being trained ever more intensively in ever-narrower degree programs in business, education, and health fields. Many universities continue to tout their comprehensive core curricula despite having a relatively small set of liberal education requirements for majors in business and other professional fields.