Identifying psychological factors associated with engagement in healthy behaviors in later life is a key to effective behavior interventions. In all, 204 adults (M_age = 80) took a questionnaire assessing objective and perceived health, positive affect and negative affect, aging attitudes, and three classes of health behaviors: eating/nutrition, exercise, and general health behavior. Regression models found better eating behavior was best explained by older age, more exercise was best explained by more positive affect, and better general lifestyle behavior was best explained by worse perceived health. Programs promoting health behaviors in older adults can utilize the findings to tailor interventions to the health behavior of interest.