I had speech therapy in school for talking really fast, but I talked really quietly, not loudly. I don't remember much of it because I was really young, but according to my mother, I was nearly impossible to understand before the therapy. I still get told often that I talk fast and really softly, but I have improved over the years, according to my mom.
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"Have you never seen something so mad, so extraordinary... That just for one second, you think that there might be more out there?" -Gwen Cooper, Torchwood