The professor exhorts them to be wide-awake, observant, conscientious, true to their clients, progressive, radical in theory but conservative in practice, and diligent in study.
That simple act is powered by a complicated "lightning storm" of neural activity in the brain, a mind-boggling transaction that lies beneath our wide-awake awareness.
The internet is full of advice on the matter, knowing full well there are legions of wide-awake, red-eyed mums trawling various pages in the early hours.