Given that hit points, as well as the loss and restoration thereof, are abstract, it makes little sense for someone who isn't completely out to be that beaten up anyway. They've just lost willpower, luck, whatever plot protection you care to use. Of course, given that HP are abstract, there's no reason, other than sheer pig-headedness, to insist on narrating an Inspiring Word as flesh wounds knitting themselves up, as opposed to, say, something abstract. I seem to recall an awful lot of fantasy heroes(and other heroes, too) roughing it up for awhile, then making a comeback.