On: The biology of dads

[jacksnipe]

I have experienced something extremely similar when a pickup truck blew through an intersection and almost hit my partner and I. I yanked us both out of the way and kind of half-dove backwards -- it took about 20 minutes before I realized I was in a ton of pain (side note: it's a miracle I didn't hit my head).

So I suspect that this is just adrenaline? It felt just like what you've described here.