Happy Jack Yoga University is a Yoga Alliance-accredited online school founded in 2010 by Jack Boken and Hanna von Hafenbrädl. Based around a membership model, the school delivers its RYT-200, RYT-300, and RYT-500 yoga teacher certifications fully online, alongside 30+ in-depth courses covering Yin, Vinyasa, Restorative, Kundalini, meditation, yoga philosophy, and the business of yoga.
The school positions itself as a sanctuary for healing, awakening, and service, blending yoga, philosophy, and community. Members join weekly live calls with the founders and guest mentors, complete coursework at their own pace, and connect with a global community of practitioners and teachers. Since founding, Happy Jack Yoga has taught more than 100,000 yogis and certified over 800 teachers across 30+ countries. Both founders are E-RYT 500 certified with Yoga Alliance.