I just posted to this group about an "optimal speaking rhythm". I recently used a vibrating metronome app for my phone, and turned in my pocket while I ordered food. First time today. It worked alright. It made the biggest difference on the phone, though. I didn't have the metronome on, but my mind almost automatically went into a "rhythm". One of the smoothest phone calls I've had in a long time, and I HATE talking on the phone.