More on Hydration.
I discovered this morning that going for a run without drinking much water the day before feels like absolute horror! Because tap water here in Adelaide is disgusting (I live in Melbourne, but I'm in Adelaide for a week on a work project), I've been drinking from boxed water from the supermarket. It's perfectly fine, but in limited supply since I only bought one box, haha. So I probably only drank about a litre of water yesterday, which is 2 less than usual.
This morning's jog was horrible! I even felt dizzy at one point. I've got a headache right now, but it's eased up a bit now that I've had a swim and a nice cold shower and about 4 glasses of water in the past 20 minutes.