This study was designed to assess the effects of lost resources on exercise behavior among a sample of 30 foreign exchange students who were identified as having experienced a relapse in their level of physical activity. The first phase of the study was longitudinal in nature, comparing baseline data collected from a sample of 110 exchange students from Malaysia on their initial arrival in England with data collected from the same sample 4 months later. Results of a multivariate analysis of variance indicated a significant effect for scores on processes of change, self-efficacy, and decisional balance, F(12, 18) = 12.74, p < .001. Subsequent examination of univariate F values also revealed significant differences for self-reevalualion, reinforcement management, self-liberation, and self-efficacy. Results from the second phase of the study, which qualitatively assessed the relationship between reductions in physical activity and personal/material resources, revealed that exercise behavior was significantly influenced by resources lost as a result of being in an unfamiliar environment. Implications for health promotion practitioners and researchers are discussed.