AUTHOR=Ide Bernardo N. , Marocolo Moacir , Santos Clarcson P. C. , Silva Bruno V. C. , Silvatti Amanda Piaia , Simim Mário Antonio Moura , Oranchuk Dustin J. , de Agostini Guilherme Goulart , Mota Gustavo R. TITLE=Commentary: “You're Only as Strong as Your Weakest Link”: A Current Opinion About the Concepts and Characteristics of Functional Training JOURNAL=Frontiers in Physiology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2021.744144 DOI=10.3389/fphys.2021.744144 ISSN=1664-042X