I wanted to improve my presentation skills. I felt my voice was too nasal and thin, I spoke too fast, and emphasised too many words. So I approached a voice training coach. It seems everything -- from delivery, pauses, speed of delivery to sore throats -- could be improved if one could pay attention to proper breath control, and diaphragmatic breathing. I can certainly attest to that.
I went looking for a voice coach. All I could find were singing coaches and autistic speech therapy ones. Nobody who could coach me at giving presentations. How did you find yours?
Most useful tip he gave me: in between sentences focus on breathing out, instead of breathing in. If you clear your lungs they will take care of filling up automatically.