Things change in physical education, but changes are often slow and might go unnoticed. Termed the "chameleon of all curricula" (McKenzie, 2001),1 physical education has historically played a utilitarian role and has adapted both to meet societal needs and to survive as a profession. The founding fathers of physical education in North America were primarily medical doctors, and their focus on physical fitness and health has held remarkably steadfast over time. In this article, the authors traces the evolution of physical education and provides distinction between physical fitness and physical activity. The authors also discuss the role of physical education teacher educators in students' physical activity and public health. (Contains 1 table and 2 notes.)