Yeah, in early days of 4e my friends and I would joke that it was basically some dude saying, "Rub some dirt in it! That'll stop the bleeding."If you recover hit points by means of a "healing surge," that implies that you are, well, healing, and this naturally leads to questions about how the warlord shouting at you causes your wounds to close.
Or that after combat we'd just flex our muscles really hard, and cause the capillaries to seal. Then we'd drink the blood of our enemies to replenish our own.