The present article analyses reasons for physical inactivity of disengaged students at Klaipeda University. A questionnaire was comprised with reference to an International Physical Activity Questionnaire. The sample chosen for the research comprised a number of 203 students being not engaged in sports. It has been observed that students of Klaipeda University dedicate a very slight portion of time for their individual sport related activities: the greatest majority of students (28,6 % of females and 25,2 % of males) spend only 1-2 hours per week for exercising and sports. Results reveal that the main causes for students’ physical inactivity are the following: insufficient variety of sport clubs, lack of time and unwillingness to engage in exercising and sports