I have a session with them in a few weeks. To summairse, it is a lot of guided mindfullness sessions and talking through some of the issues. They full explain there methods and theory behind it and it seems to have worked for them. I always struggled with the biological arguement because I did a little test on discord, I was stammering when talking to people muted my mic and then I could say what I want. Which leads me to beleive it more has to do with anticpation and flight and fight responses.