AUTHOR=Afonso José , Olivares-Jabalera Jesús , Andrade Renato TITLE=Time to Move From Mandatory Stretching? We Need to Differentiate “Can I?” From “Do I Have To?” JOURNAL=Frontiers in Physiology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2021.714166 DOI=10.3389/fphys.2021.714166 ISSN=1664-042X