John Yates John Yates, PhD (Culadasa) was a meditation master for more than four decades in the Tibetan and Theravadin Buddhist traditions. A former professor, he taught physiology and neuroscience for many years, and later worked in the field of complementary nd alternative medicine. He was the author of A Physician's Guide to Therapeutic Massage, currently in its third edition. He passed away in 2021. Read More Read Less