IDK... I used to run out of breath from extremely long blocks, but never really had shortness of breath from the anxiety. Not really tension, per se. My negative thoughts were usually directed at others. I see a lot of stutters internalize negativity, blaming themselves. I never did that. I blamed others for how they reacted to my stutter. I had a lot of anger I carried around. Stuttering can do a lot of damage. It hurts. I'm a 50 year old man. I don't cry about my emotions. But I've caught one or two videos of stutters that absolutely crushed me. Not going to lie, full on tears running. Lots of deep seated damage from my youth that I've likely never fully processed.