In the long run, a full night's sleep keeps humans alive longer... So I've read.

[Then again, he has no idea how long Mukuro will keep that body. A few more months? A year? As long as Chikusa doesn't discourage him? It's something to ponder... but maybe not right now, as he sits opposite of Mukuro and lets his stare linger on him before glancing down at the menu.]

...You didn't have to put yourself through it all.