Fatigue is a physiological phenomenon that disappears through rest. The study of school fatigue is very important because the physical and intellectual effort of students is limited. The study was carried out on a group of 184 high school students from two Moldavian counties, in Romania. A questionnaire was applied with questions about the presence of fatigue, methods of spending free time and social relationships. Fatigue is rarely present in half of the students questioned. In 57.06% of cases, they find themselves tired in the morning. The time spent watching television (TV) is between 0.5-1 hour a day (41.84% of cases), and computer use is between 2-3 hours a day (46.19%). There are young people who have no friends and who do not spend their free time with them. Free time spent in front of the TV or computer is a source of fatigue and not rest.