Footsore
Nothing to do with too much running - this is a weird thing.

It felt like I'd trodden on a wasp - a stab of pain and a lump the size of, well, a wasp sting on my foot - but this morning I have a bruise on the sole of my foot, near my big toe joint. How strange is that?
Oh and it still hurts a bit too.

I suppose I shouldn't run on it if it's still sore tomorrow - but I actually want to. It's come as quite a shock to me to feel that way - is this what they mean by the endorphins kicking in? Obviously I have become addicted to endorphins without even knowing I was making them, and now it looks like I might miss a fix I'm getting anxious...
It's a double-edged sword and no mistake.