A study by Assistant Professor KYAN Akira (Department of Social Epidemiology, Graduate School of Medicine and School of Public Health, Kyoto University; while conducting the study, Graduate School of Human Development and Environment, Kobe University) and Professor TAKAKURA Minoru (Health Promotion & Development / School Health Division, Faculty of Medicine & Graduate School of Health Sciences, University of the Ryukyus) found for the first time that socioeconomic inequality in achieving recommended physical activity levels among Japanese youth increased while difference in breakfast intake decreased during the COVID-19 pandemic compared to levels before the pandemic.