Examines how certainty about children, obesity, exercise, and health is produced in the context of 'expert' knowledge and recontextualized in the academic and professional physical education literature. Argues that the unquestioning acceptance of the obesity discourses in physical education helps to construct anxieties about the body, which are…

Though leanness in athletes is often a natural state, it can pose long-term liability to some athletes' performance and/or health. The physician must determine when leanness is reason for clinical concern. Athletes who do not eat enough to sustain training must either reduce the exercise load or increase nutritional intake. (Author/SM)