 This study examined the association between physical activity levels and the severity of COVID-19 and hospitalized adults. It found that those with lower levels of physical activity had a greater risk of death from the virus. Additionally, those with low levels of physical activity also required more oxygen therapy and longer hospital stays than those with higher levels of physical activity. This suggests that physical activity may be beneficial in reducing the severity of COVID-19. This article was authored by Edita Sutkowska, Agata Stanek, Katarzyna Matziarska, and others.