[Twisol]

As a night owl and an introvert, there's this perverse feedback loop where I'm incentivized to be underslept before an important presentation, because the slight good humor / mania / heightened senses (and, I would add, a mild numbness to peoples' judgments about me) help me do a better job of the presentation.

Of course, I'm not advocating that people be totally loopy! But there's a weird Ballmer peak-esque [1] effect.

[1] https://xkcd.com/323/