I found these tips in some sub, originally in Spanish, from a speech therapist.

I found these tips in some sub, originally in Spanish, from a speech therapist. I figured it wouldn’t hurt to leave them here in case they’re useful to anyone. 1. **Diaphragmatic breathing:** ALWAYS breathe through your nose, expanding your ribs, opening and closing your diaphragm—not your belly or your chest. You should use your mouth only to speak or exhale. Notice that many times when you stutter, you’re saying the syllable you get stuck on while constantly inhaling, like “a-*inhale*\-a-*inhale*\-al-*inhale*...” until it comes out. There are tons of videos on YouTube to train this. 2. **Slow, out-loud reading:** It can be reading with a metronome, keeping the rhythm with your foot, syllable-by-syllable reading, reading while skipping one out of every three words, reading the words in reverse order... the idea is to SLOW DOWN the way your mind processes the message you’re about to say, forcing you to stop and analyze what you’re going to say/read. Many times we’re not clear on what we’re going to say (nerves, too many things to say, already thinking about the other person’s response), and that’s why we end up getting stuck. This one helps me the most—if you read 5–10 minutes a day you’ll notice a huge improvement and much more ease in forming your message. It’s also very useful to read with something in your mouth (about the size of a pencil) and pronounce what you’re reading in an exaggerated way, as if there were another person who needs to understand you. 3. **Air management:** You need to be aware of how much air you have left so you know how to distribute the words when you speak and how many to say. For example, I used to always breathe through my mouth and so I wasn’t aware of how much air I had left, and on top of that I mixed inhalation and exhalation. So when I finished stuttering I would speak super fast, wouldn’t articulate well, and said everything in one burst. Reading ties into this a bit—it’s about knowing how to manage your air. 4. **Nasal resonance:** When you speak, try to make sure your nose “resonates” (so that if you pinch it, you can notice the change in your voice tone). This helps you project your voice more and become more aware of it. 5. **Pre-speech routine:** This varies from person to person. It could be exhaling a bit of air through the mouth before speaking, taking a small one-second pause (even if it feels endless), using some filler word or set phrase, a small “mm” before speaking, a moderately deep breath, keeping rhythm with your hand or foot, etc. Basically, techniques to help you feel more secure before speaking.