Our biological rhythms are of great importance and their dysfunction can cause disruptive effects on sleep, affecting our performance in various activities and human health. The quarantines adopted due to the COVID-19 pandemic produced several changes in our daily lives, reducing exposure to sunlight and altering the schedules of our social activities. For this reason, and because these are the main factors affecting our biological rhythms, the present study is based on the idea that the quarantine carried out in Argentina affected our circadian rhythms. Additionally, it was thought that the use of digital devices has increased and exposure to sunlight has been reduced, which are other important factors that may alter the biological clock. In the present study, we propose to take a new look at our biological clocks in the pandemic, emphasizing the importance of their optimal functioning and their link to human health.