Sage Rountree, PhD, E-RYT 500, is a pioneer in yoga for athletes and an endurance sports coach with certifications from USA Triathlon, USA Cycling, and the Road Runners’ Club of America. Sage hosts the podcast Yoga Teacher Confidential: Secrets of Becoming a Great Yoga Teacher. Her virtual yoga studio, Comfort Zone Yoga, offers a mentorship membership, continuing education workshops, and a 300-hour yoga teacher training.

She is author of The Athlete’s Guide to Yoga (2008), The Athlete’s Pocket Guide to Yoga (2009), The Athlete’s Guide to Recovery (2011; second edition 2024); The Runner’s Guide to Yoga (2012), Racing Wisely (2013), Everyday Yoga (2015) The Professional Yoga Teacher’s Handbook (2020), and The Art of Yoga Sequencing (2024). With Alexandra DeSiato, Sage is co-author of Lifelong Yoga (2017), Teaching Yoga Beyond the Poses (2019), Teaching Yoga Beyond the Poses, Volume 2 (2025), and Yoga Off the Mat (2026). She is creator of The Athlete’s Guide to Yoga DVD (Endurance Films, 2008) and a long-standing contributor to Runner’s World, Yoga Journal, Ironman.com, and USA Triathlon Magazine.

Sage’s work helps people feel relaxed and confident so they can achieve peak performance in sports and in life. Sage speaks, teaches workshops, and leads trainings internationally and at Comfort Zone Yoga, her virtual studio focused on teacher development. An Experienced Registered Yoga Teacher (E-RYT 500) with the Yoga Alliance, Sage has spent over 15 years on the faculty at the Kripalu Center for Yoga and Health. Her students include casual athletes, Olympians, and many University of North Carolina athletes and coaches. Naismith Basketball Hall of Fame Coach Roy Williams was her private client for over a decade, up until his retirement from UNC.