The present research intended to examine the relationship between lifestyles and the degree of sensation-seeking (excitement-seeking) based on personality traits among Islamic Azad University-Buin Zahra Branch. A descriptive correlation design was employed in this study in which the statistical population consisted of 2120 Master students from all disciplines at Islamic Azad University-Buin Zahra Branch, Iran. Through random sampling, the sample size was determined and then using Krejcie and Morgan Table, a sample of 322 subjects were selected as the participants in the study. The results revealed that there was a significant relationship between lifestyles and the degree of sensation-seeking (excitement-seeking) based on personality traits among the participants at P<0.01.