My guess is the athletes staying at the Olympic Training Center in Colorado Springs are asleep about now having chalked up a few REM cycles already, it's midnight-ish after all. When day breaks, they'll be up, eat, and work on their craft for sweat-drenched hours. Years of obscurity and toil and aches and practice. Dew-dropped early morning after early morning. Favorites and long-shots dreaming side by side.
For all of their hard work, nothing's guaranteed. There are only three podium spots up for grabs in each event and more than a few athletes compete in a lone event. But off they sail into uncertainty with a beacon of hope to guide them.
Most of us will never compete in the spotlight on a global stage but, even on a smaller scale, tasting glory means letting go of what we think we know in order to learn about what we don't; the practice of facing fear and uncertainty makes perfect sense.