el-remmen
Moderator Emeritus
The gigantic handwave is that your fighter's training and experience are why your hit die is a d10 instead of a d8.
Right. A high HD and HP pool is defense. Taking the same HP damage that would kill all common folks and a good percentage of other PCs and continuing to fight is part of that fighter's training.
Back in 1E days, there was an optional Duelist class detailed in an issue of Dragon that made the argument that they had a d12 for HPs not because they were hulking like barbarians, but because they were good at defense and not getting winded when others begin to flag. That has long had an influence on how I see (and describe) hps.
Yes hps also represent physical durability of your flesh, but that is one abstract aspect of conglomeration of abstract aspects it represents. I can live with it.