The purposes of this study are to apply psychological constructs such as involvement, thinking and feeling to the classification of leisure activities, and to investigate some benefits and constraints caused in those activities through analyzing lifestyle including personal acts, interests, opinions and sense-of-values. The main findings and implications drawn from the analysis are suggested as follows. First, lifestyles can be classified into five main types: convenience, conservatism, personality, success, first-class directional ones. Second, even the same leisure activity can make various differences in the levels of involvement, thinking and feeling, respectively, according to each participant\'s lifestyle. Third, considering that information search action for leisure is one of the main characteristics of experienced consumers, it is not the case in most Koreans with its medium level. And finally, the most practical constraint in leisure activities is structural constraints, both in economy and time limit, deciding whether people participate in those activities or not. The significance of this study lies in two-fold respects. First of all, it can provide anew perspective on the classification of leisure activities by approaching through psychological constructs in still unexplored field of leisure psychology. And it can also contribute to advancing the understanding of leisure activities through presenting the reasons of participation and rational decision-making procedures in that process.