How would you handle a duel to first blood/honor?
On the one hand, HP is just a number to show how much fighting potential you still go in you. Taking damage doesn’t necessarily mean your character is getting bloodied. So a samurai themed character who has never been touched can still keep his narrative theme of avoiding all attacks, even when he takes 8 damage.
On the other though, typically a fight to first blood doesn’t involve both parties fighting to the absolute limit. And it certainly doesn’t take a day of rest to recover from a cut to the shoulder or leg.