This guy is Vinh Giang. He makes videos on YouTube about communication, public speaking, and confidence, and they are super interesting (and very useful for someone like me who speaks in front of a lot of students).

This was the first vid of his I saw:

That “don’t end on a high pitch” thing is something I really need to work on when I teach.

I stare down interrupters in class, hahaha. It gets super awkward and it usually stops the interruptions pretty quickly.

Check him out, especially if you do any public speaking.