Transitioning to a relaxed state.

Transitioning to a relaxed state. In this article [https://www.stuttering-specialist.com/post/the-stress-fight-flight-freeze-pattern](https://www.stuttering-specialist.com/post/the-stress-fight-flight-freeze-pattern) the author talks about transitioning to a relaxed state when you begin to "panic" during a block. I want to research more on how to make it a habit to transition or remain in that relaxed state while stuttering. Please share your opinions or resources/books on this topic.