AUTHOR=Ferrari Ilaria , Schuler Patricia , Kress Johanna , Bretz Kathrin , Niederberger Lukas TITLE=The open gym—an active (lunch)time offering at all-day schools JOURNAL=Frontiers in Sports and Active Living VOLUME=Volume 7 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/sports-and-active-living/articles/10.3389/fspor.2025.1543771 DOI=10.3389/fspor.2025.1543771 ISSN=2624-9367