AIM: This study examined levels of Internet addiction, preferred types of Internet activities, and the predominant chronotype in health studies students. Differences in the degrees of Internet dependence were also examined based on sociodemographic characteristics (gender), characteristics of Internet activities (time spent on the Internet and type of Internet activities) and chronotype of respondents. Material and methods: The study involved 87 second-year undergraduate students of the University Department of Health Studies. The Composite Morning Scale, Internet Addiction Test and General Data Questionnaire were used to answer the set research goals. Results: The results showed that almost half of students spend 1-3 hours a day online, while more than a third spend 3-6 hours online. Instant messaging (WhatsApp, Viber, etc.) and social networks are used by the largest number of students. Regarding the chronotype, the largest number of students, 38% of them, would prefer to get up between 7:45 and 9:45 if they could plan their daily schedule completely freely. About 50% of students would prefer to go to bed between 22:15 and 00:30 if they could plan their evenings completely freely and if they could follow their own personal rhythm. Almost the same number of students in normal conditions tolerate getting up in the morning quite difficult (36.05%), and 37.5% tolerate it easily. A total of 47.67% of students are more of the evening type, and 3.49% of the exclusively morning type, which is 13.67 times more students who are more of the evening type compared to students who are exclusively of the morning type. After the research, it was proven that respondents who spend more time on the Internet have higher levels of Internet addiction, while no differences were found in the degree of Internet addiction with regard to the types of Internet activities used. The highest dependence on the Internet was found among respondents who are exclusively "evening" types, and the value is 14.45 points higher than respondents who are more "morning" than "evening" type. Conclusion: Internet addiction is a major social problem, and younger age groups are particularly at risk. A risk factor is the current pandemic that increases the risk of an increased incidence of Internet addiction. Time spent on the Internet and the "evening" type of chronotype have been identified as significant predictors of Internet addiction.