Why couldn't Okonkwo sleep or eat for two days.?

Oh, dude, Okonkwo couldn't sleep or eat for two days in Chinua Achebe's "Things Fall Apart" because he accidentally killed someone, which tends to mess with a person's appetite and ability to catch some Z's. Like, who knew committing manslaughter could be such a buzzkill for a good night's sleep and a hearty meal, right?