The purpose of this investigation focused on determining the effects of a physical conditioning program on physical fitness and health attitudes on inpatient adolescent male substance abusers during and following participation in a six week fitness program. The fitness measures chosen for this study were the 1 1/2 mile run, skinfold, sit-and-reach, and grip strength. The first four of these measures make up the AAHPERD test battery (AAHPERD, 1980). The Health Attribution Test (Lawlis and Lawlis, 1980) was administered to determine health locus of control.