Sure! As I'm sure you know, not a lot is known about what causes stuttering, but there are a lot of theories about what may contribute to it. One of the things that researchers speculate may contribute to moments of disfluency, particularly the "blocking" you're describing, is insufficient airflow to facilitate adduction of the vocal folds to begin the utterance. Breath stream management is a technique that aims to compensate for this by ensuring the speaker is initiating the utterance with adequate air supply and then continuing the airflow thought the entire utterance, on one "breath". There's a little more nuance to it, but basically it's taking a breath before you begin speaking like normal, but instead of exhaling as you speak, you exhale before you begin speaking so that airflow is already moving before you attempt to adduct the vocal folds. It's also known as the "breath curve," because some find it helpful to visualize a curve that rises and peaks with inhalation, and then lowers with exhalation. The moment of phonation (speaking) would occur not at the peak, but slightly below the peak. It takes practice to coordinate your breathing and make it sound natural, but I've found it extremely helpful. You might have some trouble finding a speech therapist who is experienced with it, but it's worth looking into. Adult stuttering is a very uncommon disorder, so not many SLPs keep up with the research. I'd be happy to help you any way I can. Source: I am a speech pathologist and also a person who stutters.