Abstract Background The study aims to investigate if the tendency to procrastinate has a relationship with engaging in risky behaviors among university students. Methods A cross-sectional study was conducted at the ‘Magna Græcia’ University of Catanzaro, in the Southern part of Italy, using a stratified random sample technique. Undergraduate students (ages 18 to 30) were provided with an anonymous online survey via the institutional email. The survey comprised five sections to assess procrastination levels, sleep quality, breakfast habits, alcohol and tobacco use, and social and demographic characteristics. Results Of the 404 participants, more than half were enrolled in medicine or life science majors. The procrastination mean score was 14.8(IQR 10-20). Poor sleep quality was found in 57.2% of students and women were the most affected part of the sample. The logistic regression model revealed that higher procrastination levels increased the likelihood of engaging in unhealthy behaviors such as breakfast skipping, alcohol abuse, and poor sleep quality. Furthermore, the study found that people who skipped breakfast were more likely to engage in smoking and alcohol abuse, suggesting the interconnectedness nature of unhealthy behaviors. Conclusions The study’s findings shed light on the correlation between procrastination and unhealthy habits. Moreover, the results can offer recommendations for how universities might successfully support students by implementing integrated, evidence-based programs to assist students who struggle with procrastination. Indeed, universities can serve as centers for promoting wellness by increasing awareness of the need to change deeply rooted behavioral patterns. Hence, breaking the vicious cycle of procrastination can ultimately lead to improved academic performance and overall well-being for students. This will benefit both individuals’ and the general public’s health. Key messages • The novel correlation between procrastination and risky behaviors among university students was shown. • Targeted interventions must include procrastination tendency to improve academic results and general well-being.