No, it's only natural to be curious about something you haven't experienced. [And kind of endearing, to be honest. Claude finds himself smiling to himself as he mulls over how to answer, and now he's beginning to relax under Byleth's touch in earnest, the tense line of his shoulders seeming to loosen.]

Everyone's breathing slows down when they're asleep, right? Even yours. So I guess that means hearts are similar, and don't have to work as hard when we sleep, too.