This paper studies the effect of e-Lifestyles on the fitness industry. The aim is to investigate the (mediating) role of e-Lifestyles in the relationship between behavioral intentions to use the fitness center app, app usage behavior, and member overall satisfaction with the fitness center, i.e., explain whether e-Lifestyles allow us to better understand fitness center satisfaction or app usage intention. Results of 1403 members revealed that the relationship between behavioral intentions to use the app and the members' overall satisfaction with the fitness center is positively mediated by e-Lifestyles. Results further demonstrate that there is a direct positive effect of behavioral usage intentions of the app-on-app usage behavior and overall member satisfaction toward the fitness center. The study adds to the literature on e-Lifestyles by demonstrating its significance in the context of fitness center management. This study helps managers conduct more thorough marketing plans and develop differentiated strategies and provides information for app designers.