Upon becoming members at a community gymnasium, 55 women were randomly assigned to one of three groups: control, self-monitoring of gym attendance, or self-monitoring of attendance plus extra staff attention. The effect of these interventions on gym attendance over 3 months was examined. A 3 X 4 (Group X Time Phase, first 3 weeks to last 3 weeks) ANOVA indicated that the main effects for group and time predicted attendance at the gym. Attendance during the first 3 weeks was significantly greater than attendance thereafter. The control subjects attended significantly less than the self-monitoring subjects at all phases. Further research is suggested toward using self-monitoring, staff support, and periodic progress feedback for increasing program adherence. In addition, self-motivation and body fat percent were assessed initially. Correlations between these two variables and attendance failed to support their usefulness as predictors at any time phase.