Sage Rountree is an internationally recognized authority in yoga for athletes, an endurance sports coach specializing in athletic recovery, and the co-owner of several wellness businesses. Sage is the author of thirteen books, including The Athlete's Guide to Yoga, Racing Wisely, Everyday Yoga, and, Lifelong Yoga and Teaching Yoga Beyond the Poses, cowritten with Alexandra DeSiato. Her latest are The Professional Yoga Teacher's Handbook and The Art of Yoga Sequencing.

Sage moved from a career track in academia to one teaching yoga and training others to do the same, and to do it with clear standards and boundaries to the benefit of their students. She directs the Carrboro Yoga Company's advanced studies teacher trainings, which draw students from around the world. She also co-owns Hillsborough Spa and Day Retreat. Sage served as a faculty member at the Kripalu Center for Yoga and Health for over a decade, and she has offered workshops and taught at festivals both internationally and around the United States.

Sage’s in-person trainings and online courses include lessons in sequencing yoga classes, developing workshops, managing the yoga classroom, and being a professional movement teacher—the subject of her most recent book. A pioneer in yoga for athletes, she has worked with athletes at every level, from youth and amateur athletes to NBA and NFL teams, players, and coaches. In addition to writing and cowriting ten books, her work has appeared in several publications, and she has been a regular contributor to Yoga Journal and Runner’s World.