AUTHOR=Scott Jonathan P. R. , Weber Tobias , Green David A. TITLE=Editorial: Optimization of Exercise Countermeasures for Human Space Flight—Lessons From Terrestrial Physiology and Operational Implementation JOURNAL=Frontiers in Physiology VOLUME=10 YEAR=2020 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2019.01567 DOI=10.3389/fphys.2019.01567 ISSN=1664-042X