This study aims at analyzing the impacts of the modern lifestyle on the mountainous areas, using as a case study the Tzoumerka range. In the beginning, a definition of lifestyle is given and then a literature review about its evolution in Greece is presented, focusing mainly on the lifestyle effects on different aspects of modern life. In the following, the outcomes from the analysis of the questionnaires are used to investigate the relationship of the young residents of Tzoumerka with tradition. Moreover, the ways of spending their leisure time are examined along with their consuming practices and everyday habits. The objective of this study is to note the differentiations with the past and reveal the consequences of the modern lifestyle on the young population of this mountainous area.