Board Thread:General Discussion/@comment-31371445-20170222233857/@comment-32182236-20180820004618

HP represents the connections between the soul and the body, all identical and parallel to each other. You will have a harder time communicating with your soul if you have less connections (more current forced to move through the same wire), but you will die only if the connection count reaches 0. In essence, the HP is not the hit points of the soul, but of the thing keeping the body alive.

Also, this HP is still magical. It's the connection between the body and the soul, not literally the stamina of the body. This is how Frisk doesn't get physically damaged much, and it also explains how could the souls of the other humans persist, assuming the mosters attacked them the same way they attacked Frisk. Yes, HP is indeed referring to the thing keeping the body alive, and not the SOUL. You got that one right. But do note that Frisk DOES get physically damaged, as Toriel points out. We just don't see where it is.

(When you see everything in pixelated graphics, it's hard to see thin cuts like that. So, it would look as if they're not there to you, being too thin to put into pixels this large. So.. wounded sprite would look just like the regular sprite. ...Maybe that's why Toby didn't MAKE a wounded sprite.)