 This study found that children who regularly walked or biked to school had better adult physical activity levels than those who did not. The study also showed that this association remained even after accounting for demographic, socio-economic, and environmental factors. Therefore, promoting active commuting to school may help to increase physical activity levels in adulthood. This article was authored by Kaisa Kaseeva, Irinja Lunasalo, Cialin Young, and others.