Adrenaline cycling.
Treat them as styles that get the competitive juices flowing. Use that sense of excitement to get your audience hooked (presuming you aren't giving the speech to a group of couch potatoes.

)
__________________
. “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche
"We can judge the heart of a man by his treatment of animals." - Immanuel Kant