In a reply to my post, I described what the exercises focused on. If you Google "orofacial disorders" and "myofunctional therapy" you can learn about the problem and find specific examples of exercises. The critical part for me was that exercises helped to create awareness. Awareness of what was happening when I stutter. This turned into awareness of everything I did with my mouth like eating, drinking, swallowing, etc. I became so aware of what was happening that I believe I began to understand more what had happened and what needed to happen to correct the problem. There's a lot evidence to show that stuttering is a neural problem, and I believe that, but the bottom line for me is that the problem was that my orofacial muscles were programmed to behave in a dysfunctional way because my breathing growing up was dysfunctional. The active awareness kicked off something in my body in where I became aware of how nothing was really smooth, chewing, drinking, swallowing, and speaking. Now, everything is smooth.