[ksaj]

I've only experienced Runner's High one time that I am aware of.

I was never a good runner. But in grade 7 and 8 we used to run a regular route for gym class. I always had to walk parts of it. But in grade 8, we had "The Great Race" and for whatever reason, I guess since it wasn't just my usual gym classmates, I got all competitive and managed to run the whole thing. I still lagged way too far to win, but I made it without stopping.

There was a point, a ways after the first point I would normally give up and walk a bit, that I suddenly felt "This is easy" and everything just flowed. So I just kept going and finished the race.

When it was over, it was a chore trying not to vomit.

That was a definite breakthrough stamina moment.