I have a heart arrhythmia that I used to be able to “fix” by doing a valsalva maneuver. It became dangerous and I needed a medical procedure to address it. While in recovery room, I woke up sooner than expected, and nurse forgot to give me call button and I could not talk to get help for a *very long time*. During my recovery time at home, went into panic research mode and accidentally discovered a link between valsalva and stuttering. https://m.youtube.com/user/stutteringtherapist/videos Then I discovered Tim Mackesey. After doing the hard work they suggested, I am very fluent and can move through blocks quickly.