Silence and a well-timed pause is a very powerful thing. It also adds rhythm. Think about your presentation having a good narrative arc. Like a film. Unless that film is called Mamma Mia, which is shit.
Brendan Dawes is an artist, and an honest one. He goes on in this article to cover killing kittens, his mate Graham's Ford Mexico and some genuinely helpful insight on what's he's learned from speaking at conferences.