 The study investigated the relationship between school and all-day physical activity of 16-year-old girls and boys. The research included 169 participants, with 93 girls and 76 boys from secondary schools in the Silesian region. Participants wore pedometers for five school days, recording the number of steps they took in three different segments of the day, before school, during school, and after school. The results showed that girls were more physically active than boys, but both groups met the recommended school number of steps. Additionally, the research found that less active students did not meet the recommended school number of steps. To increase physical activity levels, the school should provide opportunities for physical education classes, as well as encouraging active transportation to and from school, such as walking, biking, and rollerblading. This article was authored by Dorot Agrafic, Karel Frommel, Marta Wydek-Chibinska, and others. We are article.tv, links in the description below.