The new disease COVID-19, induced by SARS-CoV-2, causes acute respiratory infection. Many countries, including Poland, began to set a variety of different restrictions to reduce the spread of the virus. Most students had problems with online lessons. The study was conducted among second year medicine students of the Medical University of Wroclaw, and after the entire process of verification 200 respondents were accepted. The research consisted of completing the same anonymous online questionnaires twice in March and October 2020. This finally allowed for a critical assessment of the impact of the pandemic and its restrictions on the students’ daily lives. During the online classes, low levels of physical activity persisted (p = 0.718), whereas time spent sitting increased (p < 0.001). Despite positive changes in declared snacking (p = 0.061), we observed significant drops in the index of healthy diet (p = 0.001) and nutritional knowledge (p < 0.001) as well as an increase in the consumption of fast-food (p < 0.001) and energy drinks (p = 0.019). Reduced nutritional knowledge can cause a decrease in attention to healthy food preparation and much more frequent consumption of fast-food.

Standing waves are a very rare angiographic image with an unclear etiology. Many theories have been developed to explain this phenomenon, but none have been confirmed. We present an interesting case of a 57-year-old woman, whose angiography showed standing waves along the entire length of the superficial femoral artery. On admission, the patient's general condition was fairly good. No significant abnormalities were observed in the P-A chest feet and hands X-ray, as well as in the ultrasound of the abdominal cavity and pelvis. On March 8, the patient underwent angiography documenting the presence of regular "goose trachea-like" 'notched walls' over the entire length of the right superficial femoral artery. Angiography was then followed by an ultrasound exam of femoral arteries, however, no femoral artery wall changes were seen. The diagnosis was standing waves. Moreover, extensive diagnostics for systemic disease, as well as the overall clinical picture allowed for the diagnosis of systemic scleroderma. Standing waves are a rare phenomenon, harmless to the patient's life and health. Researchers have put forward many theories to explain its unclear etiology. The presence of standing waves has also been reported with the coexistence of diseases such as Buerger's, Tolos-Hunt's, or rheumatic heart disease. Moreover, it is worth mentioning the possibility of misdiagnosing standing waves as FMD. To summarize, standing waves are a harmless phenomenon. Despite its rare occurrence, it is worth remembering not to misdiagnose it and consequently, implement unnecessary diagnostics and treatment and cause superfluous anxiety in the patient.