You're 100% right! You just reminded me of one very good moment. I was in 8th grade when I had to do a presentation in front of my whole class. Day before presentation I read in one article that you need to focus on your breathing. When you breathe slow you talk slow, also you don't think about your stuttering which increases your chances to talk more smoothly. So when I had to presentate I focused on my breathing and it went pretty decent. I did stutter, but not as much as I normally would. Good advice mate ;) I should try this again.