But it's mostly a rather "hyped up" feeling, so it feels like the opposite extreme of the depressive phase.
When I was younger I'd regularly miss out on a night of sleep for exactly that reason, but as I get older I notice side-effect of this "treatment" of the physical kind. My teeth, which are already damaged by years of nightly gnashing, will start to hurt easily, with a higher chance of gum infections after I missed out on a night of sleep.
That's sadly something not mentioned at all in the BBC article, while my mind feels like it could be awake for days on end, my body doesn't really like that strain, especially as I get older.