Thomas Hanna has long passed. I purchased his "Somatics" book (light blue) and his reasoning was worth a try. From my understanding Martha Peterson was one of his students and she has a YouTube channel. I think hers is called "Essential Somatic Movement". I don't trust everyone's somatics. There are others on YT whose Somatics may not align with the practices of a trained professional. Here are a few off the top of my head that comes recommended: Martha Peterson, Learning Somatics (Colin), Somatics Movement Center, and Eric Cooper You can find all of them on YouTube as well as connection to their personal websites.