AUTHOR=Shen Yifei , Niu Long , Miao Li TITLE=The impact of 15-minute fitness circles implemented in China on the public’s subjective well-being–an empirical analysis based on CGSS2021 JOURNAL=Frontiers in Public Health VOLUME=Volume 13 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2025.1563722 DOI=10.3389/fpubh.2025.1563722 ISSN=2296-2565