Justin Herold is a distinguished Iyengar Yoga instructor based in Bangkok, Thailand, with an extensive background in yoga practice and teaching. Having begun his yoga journey in 1979, Justin initially turned to yoga to mitigate injuries from long-distance running. His discovery of yoga as a complete and safe system for health led him to transition from running to yoga teaching.

Justin underwent an intensive two-year teacher training program and received his Iyengar Yoga Teacher Training Certification. He began his teaching career at the Iyengar Yoga Institute of Los Angeles in 1989, serving as a staff instructor there until 1992. Subsequently, he moved to Bangkok and has been working as an independent yoga instructor since June 1992.

In October 1999, he established the IYENGAR YOGA STUDIO of Bangkok, where he has been conducting classes. Justin is committed to continuous learning and frequently travels to India to study with the Iyengars – B.K.S., Geeta, and Prashant, further enriching his understanding and mastery of Iyengar Yoga​​.