Motivation - a vast concept in psychology - is considered one of the main factors in human action, being tightly related to one's self-image and level of personal satisfaction. Therefore we could describe it as the totality of one's inner drives determining their behaviour. Having as a starting point our nowadays reality, where the incidence of sedentariness is very high, we tried to find out how fitness (as a form of independently practised motive activity) impacted our students in Polytechnics. We also intended to highlight their reasons for participating in organised fitness programs. A number of 135 students of the Faculty of Aerospace Engineering (University of Polytechnics in Bucharest) were involved in this study. They were aged between 19 and 23. The researched was conducted during Mars 20 - April 21 2017. The main research method utilised was the inquiry questionnaire. The type of questionnaire was the opinion-based one. It consisted of 4 closed answers items, on a scale from 2 to 7. The data of each item were centralised and expressed in percentages according to the year of study and the gender of the subjects.